Whenever replacing batteries in your devices, gadgets, flashlights, cars, boats etc. always replace old batteries with the new ones according to the manufacturer recommendations. That means reading various manuals/instructions, but better that than causing damage, injury or worse by using wrong batteries.
When replacing batteries, be sure to check details like battery type, its chemistry, dimensions, capacity, max. drain current, max. pulse current, charging current and/or voltage (rechargeable batteries), shelf life, self-discharge rate etc. This sounds complicated, but actually it doesn't have to be.
On this page:
|- Button/Coin Cell Batteries|
|- Cylindrical Batteries|
|- Lithium Non-Rechargeable 3V Button/Coin Cell Batteries|
|- Cylindrical Lithium Batteries|
|- Small Rectangular Batteries|
Few notes: never charge the batteries with inappropriate charger, and never charge primary batteries - such activities can cause fires and even explosions.
Also, although lithium and NiMH batteries generally don't contain lead, cadmium, mercury and other heavy and toxic metals, these are very dangerous batteries if they get swallowed - electrolytes in human body close the circuit and cause various chemical processes in human body that can easily cause death!
Button/coin cell batteries are group of non-rechargeable batteries. They are very common in watches, key-chain flashlights, hearing aids, remote controls and similar.
There are several chemistry types of these batteries: alkaline, silver-oxide, zinc-air, and mercury-oxide, leading to confusion among their users.
Also, some manufacturers interchangeably use the same labels for both alkaline and silver-oxide batteries. For example, AG13 battery should be 'Alkaline G13' battery, and SG13 battery should be 'Silver G13' battery. However, AG13 (AG**) and SG13 (SG**) are both often used for silver batteries, while AG13 (AG**) is mostly used only for alkaline batteries.
Comparison of these chemistries is given in the following table:
|Voltage||1.5V||1.55V||1.4 - 1.45V||1.35V|
|Notes||Voltage drops over time||Very constant voltage||Slightly lower voltage, large capacity;
mostly used as hearing aid batteries
|Slightly lower voltage, contains mercury;
not in use anymore
|Typical Labels||LR##, LR####, AG##||SR##, SR##SW, SR####SW, SG##||PR##, P###, Z###||MR##, MR####|
|Typical LR44/SR44 Capacity||110-130 mAh||150-200 mAh||600-700 mAh||180-200 mAh|
Alkaline: Alkaline button/coin cell batteries are reliable and cheap batteries. Their nominal voltage is 1.5 volts, but as the battery is used, its voltage drops over time.
Actual capacity depends on the cut-off voltage of the used device. If it is some sort of electronic equipment requiring constant and relatively high voltage, then nominal capacity of these batteries is rather low - such device will require new replacement batteries rather quickly. If alkaline batteries are used in devices that tolerate low battery voltage, than nominal capacity is larger, since such device will not require new batteries soon.
Typical labels of alkaline batteries are LR##, LR####, AG## or similar. Typical capacity of, for example, alkaline LR44 is in the 110-130 mAh range, which is lower when compared with equivalent silver-oxide (150-200 mAh) or zinc-air (600-700 mAh).
Shelf life depends on the manufacturer, but generally newer alkaline batteries have shelf life of at least 5 years.
Silver Oxide: Silver-oxide button/coin cell batteries are the most popular type of these batteries - they are not expensive, often have shelf life of 10 or more years, they have very constant voltage during operation, which is very similar to the nominal voltage of alkaline batteries (1.55 V vs 1.50 V). This 0.05 V difference is rarely of an issue - in real life more devices will have issues due to the voltage drop in alkaline batteries than with slightly larger voltage of silver-oxide batteries.
Typical labels of silver-oxide batteries are SR##, SR####, SG##, or similar. Again, some manufacturers also label them using alkaline AG## label to emphasize that their silver-oxide (SG##) batteries are replacement for alkaline AG## batteries.
Typical capacity of, for example, silver-oxide SR44 is in the 150-200 mAh range, which is larger than equivalent alkaline LR44 capacity (110-130 mAh) and less than zinc-air (600-700 mAh).
Zinc Air: Zinc air batteries are used mostly for hearing aid devices. They have slightly lower nominal voltage (1.4 - 1.45 V), but that voltage is actually very similar or even higher than voltage of alkaline batteries during use - voltage is rather constant during use.
Also, these batteries have the largest capacity of all the chemistries in use for button/coin cells - their typical capacity is 600-700 mAh, which is several times larger capacity even when compared with silver-oxide.
However, these batteries are not so common due to several reasons, but the most important one is that they operate using air (oxygen from the air) and after their electrolyte dries out, they are dead and must be replaced. Depending on the model and manufacturer, after their protective tab is removed, leave them few minutes on the air (for oxygen to enter the battery) and use for few weeks.
When they are properly sealed (protective tab on), their shelf life is usually in the 4-5 years range.
Mercury Oxide: First of all, mercury-oxide batteries are no longer in use due to the environmental impact of mercury. These batteries have (had) slightly lower voltage (~1.35 V), but they have (had) very good capacity - typical capacity of MR44 battery was in the 180-200 mAh range, very similar to the silver-oxide SR44 batteries.
Again: mercury-oxide contains mercury and they are no longer in use. But, if small batteries are swallowed, regardless of the chemistry, induce vomiting and contact the nearest emergency service (dial 911, for example).
Here is a cross-reference chart of common button/coin cell batteries:
|4.8 mm||1.6 mm||
Silver Oxide: SR416, SR416SW, SR416S, 337
|SR416SW, 337, LR416 Battery Equivalents||337 Battery|
|5.8 mm||1.6 mm||
Silver Oxide: SR516, SR516SW, SR62, 317
Alkaline: LR516, LR62
|SR516SW, LR516, 317 Battery Equivalents||317 Battery|
|5.8 mm||2.1 mm||
Silver Oxide: SR521, SR521S, SR521SW, SR63, 379, SG0, AG0
Alkaline: LR521, LR63, AG0
|LR521, SR521, 379, AG0 Battery Equivalents||379 Battery|
|5.8 mm||2.7 mm||
Silver Oxide: SR527, SR527S, SR527SW, SR64, 319
Alkaline: LR527, LR64
|SR527, SR527SW, SR64, 319, LR527, LR64 Battery Equivalents||319 Battery|
|6.8 mm||1.65 mm||
Silver Oxide: SR65, SR616, SR616W, SR616SW, 321, V321
|SR616SW/321 Battery Equivalents and Replacements||321 Battery|
|6.8 mm||2.1 mm||
Silver Oxide: SR621, SR621SW, SR60, 164, 364, SG1, AG1
Alkaline: LR621, LR60, AG1
|364, AG1, LR621, SR621SW Battery Equivalents||364 Battery|
|6.8 mm||2.6 mm||
Silver Oxide: SR626, SR626SW, SR66, 177, 376, 377, SG4, AG4
Alkaline: LR626, LR66, AG4
|LR626, 376/377, SR626SW Battery Equivalents||376 Battery|
|7.9 mm||1.3 mm||
Silver Oxide: SR712, SR712S, SR712SW, 346
|7.9 mm||1.65 mm||
Silver Oxide: SR716, SR716SW, SR67, 315
|7.9 mm||2.1 mm||
Silver Oxide: SR721, SR721W, SR721SW, SR721PW, SR58, 162, 361, 362, SG11, AG11
Alkaline: LR721, LR58, AG11
|7.9 mm||2.6 mm||
Silver Oxide: SR726, SR726W, SR726SW, SR726PW, SR59, 196, 396, 397, SG2, AG2
Alkaline: LR59, LR726, AG2
|7.9 mm||3.1 mm||
Silver Oxide: SR731, SR731SW, 24, 329
|7.9 mm||3.6 mm||
Silver Oxide: SR41, SR736, SR736PW, SR736SW, SG3, AG3, 192, 384, 392
Alkaline: LR41, LR736, AG3
Zinc Air: 312, ZA312, Brown Tab, PR41, 7002ZD
|SR41 and LR41 Battery Equivalents and Replacements||384 Battery|
|7.9 mm||5.4 mm||
Silver Oxide: SR754, SR754W, SR754SW, SR754PW, SR48, 193, 309, 393, SG5, AG5
Alkaline: LR754, LR48, L750, AG5
Zinc Air: 13, Orange Tab, ZA13, PR48, 7000ZD
|SR48, AG5, Orange Tab, 393 Battery Equivalents||393 Battery|
|9.5 mm||1.6 mm||
Silver Oxide: SR916SW, SR68, 373, SR916
|9.5 mm||2.1 mm||
Silver Oxide: SR69, SR920W, SR920SW, SR920PW, SR920, SR921, 171, 370, 371, SG6, AG6
Alkaline: LR69, LR920, LR921, AG6
|371, LR69, LR920, SR69, SR690SW Battery Equivalents||370 Battery|
|9.5 mm||2.6 mm||
Silver Oxide: SR927W, SR927SW, SR927PW, SR927, SR926, SR57, 395, 399, SG7, AG7
Alkaline: LR57, LR927, LR926, AG7
|SR57, LR57, 395, 399, SR927SW, AG7 Battery Equivalents||395 Battery|
|9.5 mm||3.6 mm||
Silver Oxide: SR936, SR936SW, SR45, 194, 394, SG9, AG9
Alkaline: LR45, LR936, AG9
|11.6 mm||1.65 mm||
Silver Oxide: SR1116, SR1116W, SR1116SW, SR1116PW, 365, 366, S16, 608
|11.6 mm||2.1 mm||
Silver Oxide: SR1120W, SR1120SW, SR1120PW, SR1121, SR55, 191, 381, 391, SG8, AG8
Alkaline: LR1120, LR1121, LR55, V8GA, AG8
|11.6 mm||3.1 mm||
Silver Oxide: SR1130W, SR1130SW, SR1130PW, SR1131, SR54, 189, 387, 389, 390, AG10
Alkaline: LR1130, LR1131, LR54, V10GA, AG10
|LR1130 Battery Equivalents and Replacement||389 Battery|
|11.6 mm||3.6 mm||
Silver Oxide: SR42, SR1136, SR1136S, 242, 344, 350, 387S
|11.6 mm||4.2 mm||
Silver Oxide: SR43W, SR43, SR43SW, 386, 301, AG12, SR1142, SR1142SW
Alkaline: LR43, AG12, LR1142
Zinc Air: AC41E, PR43, 7001Z (Discontinued?)
|LR43, SR43, SR43SW, AG12, 386, 301 Battery Equivalents||386 Battery|
|11.6 mm||5.4 mm||
Silver Oxide: SR44W, SR44, SR44SW, 157, 357, 303, SG13, AG13, S76, A76, SR1154
Alkaline: LR44, 76A, AG13, LR1154, A76
Zinc Air: 675, Blue Tab, ZA675, PR44, 7003ZD
|AG13, LR44 Battery Equivalents||357 Battery|
Cylindrical batteries are very common batteries used in various devices, ranging from key-chain flashlights and remote control devices to electric tools, bikes, scooters and similar.
They are divided in two groups:
- primary or non-rechargeable batteries, and
- secondary or rechargeable batteries.
Both groups feature several chemistries providing various nominal voltages, capacities, shelf lives etc.
Note: never charge primary batteries. Also, never charge rechargeable batteries with the charger NOT designed for chemistry used by that particular battery.
Nominal voltage of primary cells is 1.5V regardless if they are carbon-zinc or alkaline batteries. Carbon-zinc and alkaline batteries are thus interchangeable, just note that alkaline batteries have larger capacity and are generally more used than zinc-carbon batteries.
Primary lithium batteries have nominal voltage of 3V, they are lightweight and have large capacity. Also, they tend to be more expensive than zinc-carbon and alkaline batteries and are used in high-power devices like flashlights, cameras and similar.
Nominal voltage of secondary cells depends on the chemistry. Note: never mix cells of different chemistries in the same battery pack, and always charge them with proper charger. These batteries are small, but pack a plenty of energy and if mistreated, they can burst to flames or even explode!
- Nickel Cadmium (NiCd) batteries have nominal voltage of 1.2V, they can produce insanely large currents, but their capacity and number of charging/discharging cycles is limited when compared with equivalent Nickel-Metal Hydride (NiMH) batteries. Due to their relatively high discharge rate, memory effect, environmental impact of cadmium, NiCd batteries are being phased out.
- Nickel Metal Hydride (NiMH) batteries feature good capacity, cadmium/mercury free, low self-discharge rate, large number of charging/discharging cycles, good shelf life, etc with acceptable price.
On the other hand, some NiMH batteries are optimized for low drain/high capacity applications and some are optimized for high drain/low(er) capacity applications. When low drain battery is regularly discharged using high current, its operating life is much shorter - on average good NiMH battery tolerate 400-500 charging/discharging cycles, but when abused with high charge and discharge currents, it can barely make 40-50 charging/discharging cycles. Even that is rather optimistic.
So, when replacing old NiMH batteries with the new ones, be sure to check charging and discharging currents, too.
- lithium secondary batteries have voltages between 3.3 and 3.7V, but most commonly they are labeled as 3.6 V or 3.7 V batteries. This voltage difference is the result of several, often very similar chemistries, which provide different voltage, but also achieve specific purpose like improved safety, larger capacity, higher drain current and similar.
For more information about this batteries, check Cylindrical Lithium Batteries.
Here is a cross-reference chart of common cylindrical batteries:
|8.0 mm||28.2 mm||A27, 27A, A27BP, G27A, GP27A, L828, MN27||A27/MN27 Battery Equivalents||A27 Battery|
|8.3 mm||42.5 mm||AAAA, MX2500, Mini, LR8D425, 25A, LR61||AAAA Batteries||AAAA Battery|
|10.3 mm||28.5 mm||A23, 8LR932, 1811A, V23GA, MN21, 8LR23, A23S||A23 Battery Equivalents||A23 Battery|
|10.5 mm||44.5 mm||AAA, MN2400, MX2400, Micro, LR03, R03||AAA Batteries||AAA Battery|
|12.0 mm||30.2 mm||N, MN9100, LR1, R1, 910A, 910D, HR1, KR1||-||Size N Battery|
|13.0 mm||25.2 mm||4SR44, 4LR44, PX28A, A544, K28A, K28L, V34PX, 28A, 476A, 4A76, 2CR1/3N, 2CR11108||4LR44/4SR44 Battery Equivalents||4SR44 Battery|
|14.0 mm||25.0 mm||1/2 AA, 14250||1/2 AA Battery vs 14250 Battery||14250 Battery|
|14.0 mm||40.0 mm||4/5 AA, 14430||-||14430 Battery|
|14.5 mm||50.5 mm||AA, MN1500, MX1500, LR6, R6, 15A, 15D||AA Batteries||AA Battery|
|17.0 mm||50.0 mm||A, R23, LR23||-||Size A Battery|
|21.5 mm||60.0 mm||B, R12, LR12, U10, 336||-||Size B Battery|
|22.2 mm||42.9 mm||Sub-C, 332, KR22C429, HR22C429||-||Sub-C Battery|
|26.2 mm||50.0 mm||C, MN1400, MX1400, 343, U11, LR14, R14, 14A, 14D||C Cell Batteries vs 26500 Batteries||Size C Battery|
|33.0 mm||91.0 mm||F, R25, LR25||-||Size F Battery|
|34.2 mm||61.5 mm||D, MN1300, MX1300, LR20, R20, 13A, 13D, Type 373, BA-30||D Cell Battery||Size D Battery|
Lithium button/coin cells are mostly primary (non-rechargeable) 3V batteries. Their negative electrode is lithium, while positive electrode is either manganese-dioxide or carbon-monofluoride.
Manganese-dioxide lithium batteries' labels start with 'C' and generally their operating temperature range is between -20°C (-4°F) and 70°C (158°F). Nominal voltage is 3.0 V, and a cutoff voltage is 2.0 V. Typical example is CR2032 battery, with typical capacity of ~225 mAh
Carbon-monofluoride lithium batteries' labels start with 'B' and generally their operating temperature range is -30°C (-22°F) and 85°C (185°F). Nominal voltage is 2.8 V, and a cutoff voltage is 2.25 V. Typical example is BR2032 battery, with typical capacity of ~190 mAh.
Generally BR#### and CR#### are interchangeable batteries - slight lower voltage of BR#### batteries is not problem, at least not for most common devices. But, for devices operating in extreme temperatures, BR#### batteries are recommended over CR#### batteries.
In recent time, rechargeable lithium button/coin cell batteries have appeared on the market. Their most common label is LiR#### and nominal voltage is 3.6 or 3.7 volts. Their capacity is much lower than non-rechargeable CR or BR batteries, but they can be charged and discharged many times (up to or even more than 1000 times).
For example, LiR2032 (or LIR2032, ML2032 etc.) capacity is in the 50-80 mAh range.
Replacing CR or BR types of batteries with LiR batteries should be done only if the device operates properly when being powered with 3.6V (instead of 2.8 or 3.0V). This 0.6V difference can cause operating issues and it can even damage certain devices.
On the other hand, 1000+ charging/discharging cycles can save plenty of money.
Here is a cross-reference chart of common lithium 3V coin cell batteries:
|9.5 mm||2.7 mm||CR927, DL927||-||CR937 Battery|
|10.0 mm||2.5 mm||CR1025, DL1025, 5033LC||-||CR1025 Battery|
|11.5 mm||3.0 mm||CR1130, DL1130, BR1130, KL1130, L1130||-||CR1130 Battery|
|11.6 mm||10.8 mm||CR11108, CR1/3N, CR-1/3N, DL1/3N, 2L76||Lithium CR11108, CR1/3N, CR-1/3N Battery Equivalents and Replacements||CR11108 Battery|
|12.5 mm||1.6 mm||CR1216, DL1216, BR1216, ML1216, ECR1216, 5034LC||CR1216 Battery Equivalents, Features, and Dimensions||CR1216 Battery|
|12.5 mm||2.0 mm||CR1220, DL1220, SB-T13, 5012LC||CR1220 Battery Equivalents and Replacements||CR1220 Battery|
|12.5 mm||2.5 mm||CR1225, BR1225, DL1225, 5020LC||BR1225 and CR1225 Battery Equivalents and Replacements||CR1225 Battery|
|16.0 mm||1.6 mm||CR1616, DL1616||Lithium CR1616, DL1616, BR1616, 5021LC 3V Battery Equivalents and Replacements||CR1616 Battery|
|16.0 mm||2.0 mm||CR1620, DL1620, 5009LC||Lithium CR1620 Battery - Replacements and Equivalents||CR1620 Battery|
|16.0 mm||2.5 mm||CR1625||-||CR1625 Battery|
|16.0 mm||3.2 mm||CR1632, DL1632, ECR1632, BR1632, VL1632, ML1632, LiR1632||Lithium CR1632 3.0V Battery||CR1632 Battery|
|20.0 mm||1.2 mm||CR2012, SB-T15||-||CR2012 Battery|
|20.0 mm||1.6 mm||CR2016, DL2016, E-CR2016, SB-T11, 5000LC||Lithium CR2016, BR2016, LiR2016, ECR2016, 5000LC Battery Equivalents and Replacements||CR2016 Battery|
|20.0 mm||2.0 mm||CR2020, BR2020, VL2020 (rechargeable)||CR2020/BR2020/VL2020 Battery Replacements and Equivalents||CR2020 Battery|
|20.0 mm||2.5 mm||CR2025, DL2025, BR2025, LiR2025, E-CR2025, SB-T14, 5003LC||Lithium CR2025, DL2025, E-CR2025, SB-T14, 5003LC, BR2025, LiR2025 Battery Equivalents and Replacements||CR2025 Battery|
|20.0 mm||3.2 mm||CR2032, DL2032, ECR2032, BR2032, E-CR2032, SB-T51, 5004LC, LiR2032||Lithium CR2032, DL2032, BR2032, ML2032, LiR2032, LR2032 Batteries - Equivalents and Replacements||CR2032 Battery|
|20.0 mm||4.0 mm||CR2040||-||CR2040 Battery|
|23.0 mm||2.0 mm||CR2320||-||CR2320 Battery|
|23.0 mm||2.5 mm||CR2325||-||CR2325 Battery|
|23.0 mm||3.0 mm||CR2330, BR2330||-||CR2330 Battery|
|23.0 mm||3.5 mm||CR2335, BR2335||-||CR2335 Battery|
|23.0 mm||5.4 mm||CR2354||-||CR2354 Battery|
|24.5 mm||1.2 mm||CR2412, BR2412, DL2412, ECR2412, KCR2412||CR2412/BR2412 3V Lithium Non-Rechargeable Batteries Equivalents and Replacements||CR2412 Battery|
|24.5 mm||3.0 mm||CR2430||-||CR2430 Battery|
|24.5 mm||5.0 mm||CR2450, 5029LC, DL2450, ECR2450, CR2450N, CR-2450, CR2450EL, CR-2450EL||Lithium CR2450 Battery - Brands, Equivalents and Replacements||CR2450 Battery|
|24.5 mm||7.7 mm||CR2477, DL2477, ECR2477, KCR2477, EB-CR2477, BR2477, LiR2477||Lithium CR2477 Battery - Equivalents and Replacements||CR2477 Battery|
|30 mm||3.2 mm||CR3032, BR3032||-||CR3032 Battery|
Cylindrical lithium batteries are commonly rechargeable lithium batteries with nominal voltages between 3.3 and 3.7 volts (depending on the exact chemistry).
Some models come as both primary non-rechargeable lithium batteries with nominal voltage of 3 volts, and as secondary rechargeable lithium batteries - for example, CR2 and CR123A batteries come in both versions. Swapping these batteries should be done only after thoroughly checking the documentation of the used device, since 0.6 volts can cause issues or even damage.
When looking for cylindrical lithium batteries' equivalents, be sure to check battery size, chemistry and voltage, capacity, maximum charge and discharge current, top side type (certain models), presence of protective circuitry etc.
Top side type: some lithium batteries can come with button top side (positive), while some batteries of the same type can come with flat top side (positive).
Protective electronics: some models come with protective electronics, which monitors status and current parameters of the battery, like charging/discharging current and voltage, battery temperature, remaining charge etc and if required, shut off the battery to protect it. Such protective electronics decrease the capacity of the battery, but significantly improves the safety of lithium batteries.
Common names for these batteries depends on their construction, electrolytes and electrodes, but generally they are lithium ion, lithium polymer, lithium ion polymer, and similar.
Note: major differences between lithium iron phosphate (LiFePO4) batteries (LFP batteries) and ordinary lithium cobalt oxide (LiCoO2) batteries are that LFP batteries do not have safety concerns (overheating, catching fire, explosion) like common lithium batteries, that they have 4 to 5 times longer cycle lifetimes than lithium batteries and 8 to 10 times higher discharge power. They also have slightly lower voltage (3.2 - 3.3 V).
Lithium-air batteries theoretically provide energy densities comparable to that of gasoline, but they are IMHO not yet available for commercial use, at least not with such characteristics.
Here is a cross-reference chart of cylindrical lithium batteries:
|10.0 mm||18.0 mm||10180||3.6 V Li-Ion||-||10180 Battery|
|10.0 mm||28.0 mm||10280||3.6 V Li-Ion||-||10280 Battery|
|10.0 mm||44.0 mm||10440||3.6 V Li-Ion||AAA Batteries||10440 Battery|
|14.0 mm||25.0 mm||14250||3.6 V Li-Ion||1/2 AA Battery vs 14250 Battery||14250 Battery|
|14.0 mm||43.0 mm||14430||3.6 V Li-Ion||-||14430 Battery|
|14.0 mm||53.0 mm||14500||3.6 V Li-Ion||-||14500 Battery|
|14.0 mm||65.0 mm||14650||3.6 V Li-Ion||-||14650 Battery|
|15.0 mm||27.0 mm||15270||3.6 V Li-Ion||CR2 Battery Equivalents and Replacements - CR2 Battery vs 15270 Battery||15270 Battery|
|15.6 mm||27.0 mm||CR2, 15270, 15266, 5046LC, CR15H270||3 V Lithium
3.6 V Li-Ion
|CR2 Battery Equivalents and Replacements - CR2 Battery vs 15270 Battery||CR2 Battery|
|16.0 mm||34.0 mm||16340||3.6 V Li-Ion||-||16340 Battery|
|16.0 mm||65.0 mm||16650||3.6 V Li-Ion||-||16650 Battery|
|17.0 mm||34.5 mm||CR123A, CR17345, 2/3A, 123, CR123, 17340, 17345, 16340||3 V Lithium
3.6 V Li-Ion
|Best CR123A Battery - Rechargeable vs Non-Rechargeable Lithium CR123A Batteries||CR123A Battery|
|17.3 mm||50.0 mm||17500||3.6 V Li-Ion||-||17500 Battery|
|17.0 mm||67.0 mm||17670||3.6 V Li-Ion||-||17670 Battery|
|18.0 mm||35 mm||18350||3.6 V Li-Ion||-||18350 Battery|
|18.0 mm||49.0 mm||18490||3.6 V Li-Ion||-||18490 Battery|
|18.0 mm||49.8 mm||18500||3.6 V Li-Ion||-||18500 Battery|
|18.6 mm||65.2 mm||18650||3.6 V Li-Ion||How to Pick the Best 18650 Battery and Charger||18650 Battery|
|19 mm||67.0 mm||19670||3.6 V Li-Ion||-||19670 Battery|
|20 mm||70 mm||20700||3.6 V Li-Ion||-||20700 Battery|
|21 mm||70 mm||21700||3.6 V Li-Ion||Best 21700 Battery||21700 Battery|
|24.3 mm||49.2 mm||25500||3.6 V Li-Ion||C Cell Batteries vs 26500 Batteries||25500 Battery|
|26.0 mm||50.0 mm||26500||3.6 V Li-Ion||C Cell Batteries vs 26500 Batteries||26500 Battery|
|26.5 mm||65.4 mm||26650||3.6 V Li-Ion||26650 Batteries and Chargers||26650 Battery|
|32 mm||61.9 mm||32600||3.6 V Li-Ion||-||32600 Battery|
|32 mm||67.7 mm||32650||3.6 V Li-Ion||-||32650 Battery|
Small rectangular batteries come in various sizes and chemistries. Some of them are being slowly phased out, but some are still quite common.
Again, if more than one nominal voltage is available due to the different chemistries, check the documentation of your device for supported nominal voltages/chemistries.
Here is a cross-reference chart of most common small rectangular batteries:
|36 mm||35 mm||19.5 mm||CR-P2, BR-P2, 5024LC, 223A, CR17-33||6 V (2x3 V Lithium)||CR-P2 Battery Equivalents and Replacements||CR-P2 Battery|
|45 mm||34 mm||17.0 mm||2CR5, 5032LC, EL2CR5, DL245||6 V (2x3 V Lithium)||-||2CR5 Battery|
|48.5 mm||26.5 mm||17.5 mm||9-volt, E battery, PP3, 6LR61, 6F22, 1604A, 1604D, MN1604||9 V (6 x 1.5 V)
9 V (3 x 3 V)
|9V E, 6F22 Battery Equivalents||9-volt Battery|
|48.5 mm||35.6 mm||9.18 mm||J battery, 7k67, 4LR61, 1412A||6 V (4 x 1.5 V)||-||Size J Battery|
|52.2 mm||28.05 mm||14.15 mm||CR-V3, 5047LC, 5047LF, CRV3, RCR-V3||3 V Lithium
3.6 V Li-Ion
|CR-V3, CRV3, ELCRV3, RLCRV3 Battery Equivalents||CR-V3 Battery|
|57.0 mm||35.0 mm||7.0 mm||CP1, CP3553, DLCP1, DL-CP1C, EN-EL5||3 V Lithium
3.6 V Li-Ion
|67.0 mm||62.0 mm||22.0 mm||4.5-volt, 4.5 V, MN1203, 3LR12, 3R12, 3336||4.5 V (3 x 1.5 V)||-||3LR12 Battery|
|109.5 mm||66.7 mm||66.7 mm||6-volt Lantern (Screws), 4R25X, 915, 915A||6 V (4 x 1.5 V)||6-Volt Lantern Battery||6-volt Lantern Screws Battery|
|115 mm||68.2 mm||68.2 mm||6-volt Lantern (Springs), MN908, 4LR25Y, 908A, 908D||6 V (4 x 1.5 V)||6-Volt Lantern Battery||6-volt Lantern Springs Battery|
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CR1220 battery is a very popular non-rechargeable lithium 3.0V button/coin cell battery, commonly used in keychain LED flashlights, thermometers, key-less remotes, medical scales, PDAs, heart rate monitors, cameras, and other electronic equipment.
CR1220 batteries are much more common than BR1220 batteries - they share the same physical dimensions, but they differ in chemistry and thus have different characteristics in terms of battery capacity, voltage, operating temperature, self-discharge rate, etc.
Space heaters are commonly used for heating tents, RVs, offices, rooms, cars, and even homes and apartments. They directly convert chemical or electrical energy into heat, warming up the desired area. Since space heaters directly convert chemical energy into heat, they are simple, reliable, and rather affordable, but also they are not as efficient as, for example, Air Conditioning units.
Battery operated heaters can be of great help when camping or being off-the-grid by keeping You warm during long, cold days and nights. Right? Well, things are not that simple ...
CR1620 battery is a lithium non-rechargeable button/coin cell battery, often used in car keys, digital watches, remote controllers, credit-card size devices, micro-LED flashlights, toys, as CMOS/motherboard battery, and similar.
CR1620 battery is manufactured by practically all of the most popular and reputable battery brands and finding the new one should not be a problem. However, not all manufacturers use the same label for their CR1620 batteries, leading to some confusion among the users.
Watts to BTU and BTU to Watts conversions are commonly required when calculating the power of devices that are used for air heating and cooling, like various AC units and electric heaters.
'Slight' issue is the fact that BTU is a unit of energy, while watts are a unit of power, and they can't directly be converted.
While HP is a unit of power, kWh is a unit of energy and direct conversion of these two units is not possible, without introducing the third parameter - time (T[s]).
kWh to HP and HP to kWh conversions are very important when both power and energy of internal combustion engines are transferred, stored, and compared with the energy and power of electric motors, inverters, pumps, winches, and other similar units that are powered by electric energy.
Lithium CR2032 is a very popular non-rechargeable lithium 3.0 V battery, often used in watches, calculators, medical equipment, remote controls, and other smaller electronic devices. Due to its very long shelf life (5-10+ years) and stable voltage, it is often used as a memory battery in computers, servers, cameras, and other high-end electronic devices.
Thanks to its high demand and many manufacturers that offer these batteries, there is slight confusion regarding CR2032 battery equivalents and replacements. No wonder, since one can find batteries labeled as CR2032, DL2032, BR2032, ML2032, LiR2032, LR2032, E-CR2032, SB-T51, 5004LC, etc.
BR1225 and CR1225 batteries are very popular lithium 3.0V button/coin cell batteries, commonly used in thermometers, dog collars, key-less remotes, PDAs, medical scales, heart rate monitors, remote controls, motherboards, and other electronic equipment.
Both BR1225 and CR1225 batteries share the same physical dimensions, but they differ in chemistry and thus have slightly different performances regarding capacity, voltages, operating temperature, self-discharge rate, shelf life, and similar.
Power generators are used when electric power is needed and mains power is not present - when camping, tailgating, in emergencies, and similar.
One of the very important features of power generators is - noise level. A loud power generator can be very annoying, especially when working for a longer period of time. On the other hand, a quiet power generator is a robust and reliable, but almost silent unit, giving peace of mind in more ways than just one ...
6-Volt lantern battery is a heavy-duty rectangular battery, commonly used in camping lanterns (hence the name) and similar flashlights, but also in various other applications where high-capacity, heavy-duty batteries are required.
As usual, 6-volt lantern batteries come in several chemistries and are often labeled differently, which may cause some confusion among the consumers.
Lead-acid and lithium 100 Amp-Hour batteries are commonly used in automotive, marine, industrial, and off-the-grid applications as starting, dual-purpose and very often, as deep-cycle batteries.
Since they commonly used in many critical systems (medical, security, etc.) many people wonder how long can a 100Ah battery last under a certain load.
Regardless of the car battery type or brand, from time to time it may become necessary to recharge the car battery using the battery charger. Was the battery discharged due to the parasite load, multimedia devices, or for some other reason, is not the topic of this article.
However, if that happens several times over a short period of time, check the alternator and the rest of the electric system of your car.
LR1130 is a very popular button/coin cell battery, often used in remote controls, car keys, garage openers, micro LED flashlights, calculators, toys, etc.
Since it is so popular, practically all battery brands manufacture LR1130 batteries, but they also use many other labels, including LR1131, LR54, SR1130, SR1130SW, AG10, 390, 389, 387, 189, etc. leading to certain confusion among the consumers.
AAAA batteries are small, cylindrical batteries commonly used in small electronic devices like calculators, flashlights, laser pointers, game controllers, and similar.
Like similar, but larger, AA and AAA batteries, AAAA batteries also come in different chemistries, offering different performances and features, but also different prices.
Here is a simple volts and amps to watts calculator, with short explanations, formulas, and charts.
Unit conversions sometimes can be difficult, but with most basic electric units like voltage, current, and power, things are almost always very simple. Almost always...
Refrigerators and freezers are used for preserving the food, cooling down beverages, and for other similar tasks. When the mains power is gone, refrigerators and freezers stop, with all the stored food and drinks being in jeopardy.
Regardless if You have a fridge that you want to keep operational during a power outage or you want to have a fridge or freezer running when camping, it is vital to know the power and energy requirements of your unit.
AIMS Power 12V Lithium Batteries are intended for deep cycle applications that require lightweight batteries that tolerate relatively strong charging/discharging currents and a very large number of charging/discharging cycles, like off-the-grid applications, RV house batteries, trolling motor batteries, electric vehicle batteries, and similar.
Despite being able to withstand relatively strong currents for deep cycle lithium batteries, AIMS Power 12V lithium batteries should NOT be used as cranking/starting batteries.
Lithium CR1632 battery is a non-rechargeable button/coin cell battery, based on the manganese-dioxide lithium chemistry, featuring a nominal voltage of 3.0 volts.
Lithium CR1632 battery is a very popular battery, commonly used in car keys, remote devices, toys, calculators, digital watches, as CMOS battery and similar. It is quite a common battery, and easy to obtain. But, it also comes with different labels, causing some confusion among the users.
CR1216 battery is a coin/button cell non-rechargeable type of battery, often used in small appliances and devices like watches, calculators, remote controls, credit-card sized devices, and similar.
CR1216 battery has many other labels, often leading to confusion about which battery is the right one. These labels often include DL1216, ECR1216, BR1216, KCR1216, LM1216, 280-208, 5034LC, etc.
1/2 AA and 14250 batteries are very popular small, cylindrical batteries, commonly used in electronic meters, security systems, medical equipment, baby movement monitors, dog collars, compact EDC flashlights, and similar.
1/2 AA and 14250 batteries are very similar batteries that their labels are often used interchangeably. 1/2 AA and 14250 batteries share practically the same dimensions, but they differ in exact battery chemistry and hence battery's characteristics and performances.
SI prefixes are very important in electrical engineering but also in everyday life. Their use is relatively easy, but it can also cause many problems when done incorrectly.
Watts to kilowatts, kilowatts to megawatts, and other conversions are very important when electric energy and power of electric motors, pumps, winches, inverters, batteries, and other devices are being calculated, planned, transferred, or being used. SI prefixes help significantly, especially when dealing with very large or very small values.
BCI Group 75 batteries are automotive and light industry batteries, designed mostly as either starting or dual-purpose batteries with very good starting features.
As such, BCI Group 75 batteries are commonly used in cars, light trucks, and other vehicles where they are used for starting internal combustion engines, but also for powering various other loads like pumps, winches, lights, etc.
Unit conversions in electrical engineering are very important, it is relatively easy, but it can also cause many problems when planning or troubleshooting systems.
HP to kW conversion is very important when energy and power of internal combustion engines are compared or transferred between energy and power of electric motors, pumps, winches, inverters, and other devices being powered by electric energy.
Group 48 (H6, L3, 66L3) batteries are mid-range batteries commonly used as automotive, marine, and light industrial batteries, as starting or dual-purpose batteries and for powering various electric and electronic devices while the main engine(s) are turned off or while the mains power is not present.
Most BCI Group 48 (H6, L3, 66L3) batteries are designed as maintenance-free, spill-proof AGM batteries with increased resistance to vibrations and mechanical shocks (when compared with the older wet/flooded lead-acid batteries).
Microwave ovens are very popular kitchen appliances commonly used for cooking and/or heating food and beverages. Microwave ovens are also very efficient devices, which is very important in many ways.
Due to their convenient nature, microwave ovens are commonly used when camping, on the boats, in the RVs and similar, leading many people to ask themselves, how many watts their microwave ovens actually use?
SR41 and LR41 batteries are small, button/coin cell batteries often used in digital thermometers, wrist watches, toys, small LED flashlights, wearable electronics, remote controls, and similar devices.
These batteries are available on the market in several chemistries, featuring similar, but not the same discharge characteristics and are often labeled differently by their manufacturers, leading to some confusion by their users.
Group 47 (H5, L2, 55L2) batteries are medium size batteries, mostly used in automotive and light industrial applications as cranking or dual-purpose batteries for starting mid-range diesel and gas engines and for powering various electric and electronic devices while the main engine(s) are turned off.
Most BCI Group 47 (H5, L2, 55L2) batteries are designed as spill-proof, maintenance-free AGM batteries, but there are also other models on the market as well.
BTX5L-BS batteries are small and compact cranking batteries very often used for starting small gas internal combustion engines in Powersports applications, for starting small power generators, lawn mowers, and for all other applications where the electric start of small engines is preferred over manual starting.
BTX5L-BS are also labeled as YTX5L-BS, CTX5L-BS, GTX5L-BS, PTX5L-BS, STX5L-BS, etc, with the YTX5L-BS being the most common one.
A27/MN27 battery is a small, cylindrical, non-rechargeable battery, commonly used in car alarms, remote controls, garage door openers, glucose and blood pressure monitors, telecommunication devices, headsets, toys, etc.
According to the IEC standard, this battery label is 8LR732, since internally, it consists of 8 (eight) LR732 (or LR632) batteries connected in series.
TVs are not used any more for just 'watching a TV' - they are used for 'watching TV', but also for media streaming, for gaming, as communication devices, part of security systems, etc. - it is vital to know how many watts and energy in general they require.
Regardless if You are worried about your electric bill or you want to watch TV during power outages, we bring You the TV wattage comparison chart taking into account TV sizes and technologies.
Choosing 'the best' car battery can be somewhat confusing, since just like cars, car batteries come in various sizes, shapes and also differ in terminal types and orientation, exact chemistry, CCA/MCA features, battery type, etc.
Picking the right battery means having the battery that will do its job for years to come, without leaving the user stranded with the dead car battery when needed the most.
SR616SW/321 are button/coin-cell batteries, commonly used in wrist watches, PDAs, calculators, credit card size devices, and other low-drain, continuous operation devices.
SR616SW/321 are fairly popular batteries, almost always available at hardware stores and online shops. However, many manufacturers use their own labels, leading to confusion regarding these batteries.
Conversions between electrical units are usually simple and straightforward - take a formula, write down values, and let the calculator do the rest.
However, in real life, things are not always that simple, especially when converting units that require at least one unit to be known. If You wish to know more about converting watts to amps, amps to watts, volt-amps to watts, and similar, read carefully...
Many people wonder what is the required size of the power generator in order to run an air conditioner without any power issues.
2000-watt inverter generators are popular, compact, and affordable portable units that are used in many situations, leading to the question, will a 2000 watt generator run an air conditioner in the case of a power outage?
BCI Group 78 batteries is a group of car and light trucks batteries but also used in marine and light industrial applications as starting and as general, dual-purpose batteries.
BCI Group 78 batteries are often used in 'Stop-and-Go' automotive applications, requiring the batteries to provide large currents very often and to be recharged quickly - such applications require tough and durable, high-quality batteries.
YTX12-BS is a very popular Powersports and motorcycle battery, often used in ATVs, smaller boats, snowmobiles, motorcycles, power generators, lawn tractors, and similar applications as starting battery for small gas and even diesel internal combustion engines.
YTX12-BS is the most common label used for the batteries of this size, but its label also differs among the manufacturers. When looking for a new one, pay attention to details, since there are similarly labeled batteries with different dimensions, terminal orientation, specifications, and other important details.
CR-P2, BR-P2, 5024LC, 223A, CR17-33 batteries are very popular non-rechargeable lithium batteries, commonly used in photo and film cameras, medical systems, security systems, standby devices and other applications where reliable and strong source or energy is required, even after a long time of being stored away.
CR-P2, BR-P2, 5024LC, 223A, CR17-33 are made by practically all most reputable battery brands and can be easily found at most hardware and online shops. But, since manufacturers use several, often non-standardized labels, to describe these batteries, some confusion may arise ...
ExpertPower EXP12330 is a very popular BCI Group U1 battery, featuring a nominal voltage of 12 volts and a nominal capacity of 34.4 Ah and 10h capacity of 33 Ah - hence the label EXP12330.
ExpertPower EXP12330 is a maintenance-free, spill-proof Absorbent Glass Mat (AGM), Sealed Lead-Acid (SLA) battery, commonly used in standby and float applications and even as starting battery for smaller gas engines.
SR527, SR527S, SR527SW, SR64, 319, LR527, LR64 are very small button cell batteries that often used in wrist watches, toys, remotes, and similar low drain devices.
These batteries are manufactured by the most battery brands and are easy to find in the local hardware stores and online shops, just be sure to order the battery of the right size and chemistry.
Lithium electric trolling motor batteries offer many advantages over lead-acid batteries, including lightweight design, a large number of charging/discharging cycles, a very low self-discharge rate, more constant output voltage, almost no capacity loss with the current increase, etc.
Also, lithium trolling batteries still have some issues, like high initial price and safety concerns. For safety reasons, lithium trolling motor batteries are almost exclusively Lithium Iron Phosphate (LiFePO4) batteries featuring built-in Battery Management Systems (BMS), protecting the battery from unwanted events like short circuit, overcharge, over-discharge, and similar.
Portable generators with 120/240V 50A (14-50R) plug and the list of other ports (L14-30R, L5-30R, 5-20R, 12VDC, etc.) are large, sturdy and powerful units, capable of providing plenty of energy over a longer period of time.
50 Amp portable generators are often used as RV generators, camping generators, in emergencies, on the construction sites and similar. They are usually powered by gas or gas/propane combination (dual-fuel models), with some larger industrial/commercial models featuring diesel engines.
2000 watt generators are a very popular class of power generators, featuring acceptable price, long runtime on a single gas tank, quiet operation, simple maintenance etc., and are thus often used for camping, boating, fishing trips, in RVs, etc. Also, they are often used in emergencies.
Thus, many people wonder what household appliances their 2000 watt power generators may run and for how long.
When powering home appliances using power generators and power stations, it is of utmost importance to know how much power our appliances require in order to operate properly and to avoid issues of overloading the power generators and power stations.
Our appliances chart includes the most common appliances, tools, gadgets used at homes, RVs, on the boats/yachts, during camping, etc.
WindyNation BAT-NSAP12-100 is 12V 100Ah Sealed Lead-Acid (SLA) Absorbent Glass Mat (AGM) BCI Group 31 battery, designed for various off-the-grid, float and deep-cycle applications like solar/wind battery, UPS backup battery, security/medical battery, RV house battery, electric trolling motor battery, etc.
Due to its balanced design and features, WindyNation BAT-NSAP12-100 is one of the most popular deep-cycle AGM batteries in its class, offering the users very good performances and affordable price.
BCI Groups U1 and U1R batteries are general purpose batteries often used in medical and security applications, in wheelchairs, electric scooters, golf carts, lawnmowers, and other garden tools, camping, etc.
BCI group U1 and U1R batteries are mostly AGM and Gel-Cell batteries with wet/flooded batteries being phased out. Also, lithium-ion U1 batteries are appearing on the market, offering higher capacity, a larger number of charging/discharging cycles, and lower weight, but they also cost more, at least initially.
YTX14-BS is a very popular Powersports battery, often used in motorcycles, ATVs, smaller boats, snowmobiles, power generators, and similar applications as starting battery for smaller gas and even diesel internal combustion engines.
YTX14-BS is the most common label used for these batteries, but its label also differ among the manufacturers, so be careful when getting a new one, since there are similarly labeled batteries with different dimensions, terminal orientation, specifications and similar.
BCI Groups 51 and 51R batteries are very popular automotive starting and dual-purpose batteries, and are often being used as general-purpose/auxiliary batteries in various applications requiring stable and reliable power sources.
Although Groups 51 and 51R batteries have their size defined, their size tends to vary a little bit - some manufacturers optimized their batteries for certain applications, and make them slightly smaller (easier fit) or even larger (better performances). So, before ordering a certain model, check the actual size of the battery and the size of your battery compartment.
Many people wonder if the car battery can die while driving, especially after their car battery died while driving. Obviously, answer is 'Yes, a car battery can die while driving'.
A cood car starting or dual purpose battery should not die while driving, but although it is rare event, it happens. There are many reasons why a car battery dies while driving, here are the few most common ones...
XS Power D3400 is very popular automotive BCI group 34 battery, commonly used in cars, trucks, RVs and other similar vehicles as the starting battery and as the battery for powering high power electronics including winches, stereos, pumps, lights and similar.
XS Power D3400 is Absorbent Glass Mat (AGM) Sealed Lead Acid battery with increased tolerance to vibrations and designed as spill proof battery being able to operate in almost any position.
Most cars still use lead-acid batteries of some kind - wet/flooded, AGM or even Gel-cells, but these batteries over time lose their capacity and the ability to start the engine.
Since quality car batteries are not cheap, many people wonder how they can recondition a car battery at home. Reconditioning car batteries at home can be done successfully, but this also depends on the battery type, its use, age, current condition and similar.
Solar panel kits are great solution for powering hungry electric and electronic devices in various off-the-grid situations like camping, taking fishing trips, or simply when having issues with mains power.
Solar panel kits consists of one or more solar panels, power/charge controller and one or more deep cycle batteries for storing electric energy and are usually combination of solar panel/power (charge) controller/battery or solar panel/power station.
BCI Group 94R batteries are very popular automotive and light industrial batteries, commonly used on the passenger and light commercial vehicles. BCI Group 94R batteries are also known as H7, L4 and/or LN4 batteries.
They are often installed on vehicles manufactured by BMW, Mercedes, Audi, Volkswagen etc. As such, BCI Group 94R batteries are designed to be maintenance free batteries, to be able to provide strong starting current even in low temperature conditions, to accept charge quickly, to power broad range of onboard electronics, to endure automatic start-stop applications etc.
Renogy manufactures several 12V 100Ah deep cycle batteries differing in chemistry, dimensions, electrical characteristics, warranty, price and other important features.
Renogy 12V 100Ah deep cycle batteries may be found as Absorbent Glass Mat (AGM) batteries, Gel cell batteries (two different models) and as lithium iron phosphate batteries (also two different models). Each battery type has its pros and cons, and knowing them is important for choosing the right battery for the right task.
Lithium ion 21700 batteries are very popular 3.6-3.7 volts batteries for high drain devices that also require long lasting batteries in terms of constant voltage, battery capacity, low self-discharge rate, and large number of charging and discharging cycles.
21700 lithium rechargeable batteries come in many versions differing in the their chemistry, battery capacity, maximum pulse and continuous drain current, maximum charging current, protective electronics, battery terminals etc.
Weize 12V 100Ah Deep Cycle AGM and Gel batteries are two very similar models of non-spillable, sealed lead acid (SLA) batteries, differing in electrolyte, size, terminals and few more details.
Although these two batteries are intended for general use and can be even used interchangeably, it is important to know their differences and avoid confusion and potential power issues.
Optima 35 RedTop is very popular and lightweight AGM starting battery featuring rather specific 'spiral-wound' cells technology, ensuring high vibration resistance, spill proof design, faster recharging, high CCA and MCA etc.
Optima 35 RedTop is used in cars, RVs, trucks, boats etc as strong and reliable starting battery. Despite having excellent RC value for the battery of this capacity, it should not be used in deep cycle applications.
D cell battery is cylindrical battery introduced in 1898 and used in variety of high-drain applications including flashlights, toys, radio receivers and transmitters, medical devices, security systems etc.
Most common label for this battery is 'D-cell', but others labels are used as well, like 'flashlight battery', MN1300, MX1300, LR20, R20, 13A, 13D, Type 373, BA-30 etc.
Universal Power Group (UPG) UB121000 AGM battery is large and heavy battery intended for standby and cyclic use in off-the-grid, marine, security, solar, wind, medical and similar applications.
UPG UB121000 belongs to BCI Group 27 and is Absorbent Glass Mat (AGM) Valve Regulated Lead Acid (VRLA) battery of spill proof design that can be mounted in any position, with increased resistance to mechanical shocks and vibrations.
BCI Group 35 batteries are very popular battery size of lead-acid batteries, commonly used in cars, trucks, RVs and other similar applications as starting or dual-purpose batteries.
These batteries, especially dual purpose and deep cycle batteries, are often used in other applications as well, like UPS batteries, wheelchair batteries, security system backup batteries, medial applications, off-the-grid etc.
Most popular BCI Group 35 batteries are Absorbent Glass Mat (AGM) Sealed Lead Acid (SLA) batteries, but the lithium iron phosphate (LiFePO4) batteries are slowly entering the market, at least for deep cycle applications.
SR516, SR516SW, SR62, LR516, LR62, 317 button cell batteries are often used in wrist watches, toys, remotes, and similar low drain devices.
These batteries are manufactured by almost all most reputable battery brands and are easy to find at online shops and local hardware stores.
C cell batteries and 26500 batteries are physically very similar batteries - they are cylindrical batteries commonly used at home appliances, toys, flashlights, musical instruments etc.
C cell batteries and 26500 batteries differ in chemistry type and thus their nominal voltage, capacity, internal resistance (drain type), shelf life, use and similar.
BCI Group 8D batteries are large and heavy commercial batteries, often used for off-the-grid applications, as solar batteries, as RV house batteries, for security, medical and standby applications, for powering various industrial vehicles and applications etc.
BCI Group 8D lead-acid batteries are commonly Absorbent Glass Mat (AGM) or Gel-Cell Sealed Lead Acid (SLA) batteries, with lithium iron phosphate (LiFePO4) 8D batteries being relatively rare.
BCI Group 65 batteries are commonly used as automotive, marine and industrial batteries. They are mid-size batteries, often designed as dual purpose AGM batteries suitable as both starting and deep cycle batteries, thanks to the advances in AGM SLA battery technology.
Generally, group 65 batteries feature 70-75 Ah 20h capacity, 130-150 minutes RC, 750-950 CCA with the MCA values of some models reaching almost 1100 Amps. Also, they usually weigh between 45 and 55 pounds (20 - 25 kg).
Lithium-ion BCI Group 65 batteries are not as common as AGM batteries, but they are slowly appearing on the market, offering many advantages over AGM batteries, but also having certain limitations.
4SR44 or 4LR44 battery is a small cylindrical battery often used in dog collars, film cameras, small LED flashlights, car security systems, remote controls, toys and similar.
Common labels for this battery are 4SR44 or 4LR44, depending on the exact chemistry, but there are many other labels that may confuse the user, including PX28A, A544, 28A, K28A, K28L, V34PX, 476A, 4A76, 2CR1/3N, 2CR11108, etc.
Battery powered sump pumps are type of emergency equipment that must operate reliably when required, and saving the money on these pumps or their batteries may be very expensive thing to do.
Sump pump backup battery must be strong enough to power sump pump motor and it must store enough energy to power the whole unit long enough to prevent as much damage as possible until mains power is restored.
SR48, AG5/SG5, LR754, SR754, Orange Tab/13, 193/309/393 etc. are small, button coin cell batteries often used in watches, toys, small LED flashlights, wearable electronics, remote controls and similar.
SR48, AG5/SG5, LR754, SR754, Orange Tab/13, 193/309/393 batteries are available in several chemistries and are often labeled differently by their manufacturers, leading to some confusion by their users.
Knowing your car's battery amps and other features is very important not only when replacing the battery, but also when the battery is being used not only for cranking purposes, but also for powering other electric and electronic systems like lights, navigation, multimedia devices, security systems, etc.
With more and more onboard systems, car manufacturers are slowly replacing pure starting batteries with the new dual purpose AGM batteries, featuring many improvements over older flooded ones.
BCI Group 24 batteries are mostly general purpose batteries commonly found in large UPS systems, medical and security systems, wheelchairs, in vehicles, industrial applications etc. They are rarely used as starting/cranking batteries - more commonly they are used in deep cycle of standby/float applications.
These mid-size batteries feature several subgroups, differing slightly in their dimensions - one must be careful which battery is required, since even the slightest size differences may cause the battery not to fit its compartment.
Mighty Max ML75-12 battery is Absorbent Glass Mat (AGM) Sealed Lead-Acid (SLA) deep cycle, maintenance free battery. It features spill-proof design and is intended for wide range of applications including standby and security systems, as wheel chair or trolling motor battery, emergency sump pump battery, electric vehicles battery etc.
Although designed as deep cycle battery, Mighty Max ML75-12 also features relatively high discharge rate, long service life, wide operating temperature, and low self-discharge rate. However, when used in standby applications, smart battery charger/maintainer is highly recommended for keeping the battery fully charged and ready for an emergency.
AAA batteries are one of the most common cylindrical battery sizes used in various electronic and electric devices, like remote controls, toys, cameras, flashlights, radios etc.
AAA batteries differ greatly in chemistry and hence they differ in capacity, voltage, current/voltage discharging characteristics and many other features, which may be of great importance when powering sensitive electronic equipment.
Group 34 batteries are medium-large, but still rather powerful batteries, featuring 20h capacity in the 50-75 Ah range, providing 750-900 CCA, 100-145 minutes of Reserve Capacity etc. Their weight depends on the chemistry, battery type, and internal construction and it ranges between 37 and 51 pounds (16.8 - 23.1 kg).
BCI group 34 batteries are commonly used in automotive, marine, industrial, and off-the-grid applications in the form of starting, dual-purpose and deep cycle batteries, offering good starting/cranking characteristics, a large number of charging/discharging cycles, and excellent deep cycle recovery - battery type-dependent, of course.
Lithium CR2016, BR2016, LiR2016, DL2016, ECR2016, E-CR2016, SB-T11, 5000LC etc battery is lithium 3.0 volts non-rechargeable button/coin cell.
It is very popular, low-profile battery commonly used in digital watches, credit-card size devices, remote controls, calculators etc. Since practically all most reputable battery brands manufacture these batteries, getting a new one shouldn't be a problem. However, it is good to know few additional things about these batteries ...
Odyssey Group 34 batteries are Odyssey 34-PC1500, Odyssey 34R-PC1500, Odyssey 34M-1500 and Odyssey 34/78-PC1500 batteries, featuring similar electrical features, with differences mostly being in the terminals arrangements.
Odyssey Group 34 batteries are true dual purpose battery, suitable for use in the automotive and marine applications, of-the-grid, medical and security systems and other situations where durable and reliable source of power is required. As usual, Odyssey Group 34 batteries are not the cheapest group 34 batteries on the market ...
LR43, SR43, LR1142, SR1142, AG12, 386, 301 batteries are button/coin cell batteries often found in calculators, watches, toys, small flashlights, remote controls and other small electronic devices.
According to the IEC standard, these batteries should be labeled LR1142 (alkaline) or SR1142 (silver-oxide). In many instances shorter, two-digit code is used: LR43 for alkaline and SR43 for silver-oxide batteries, but there are other labels as well, like AG12, SG12, 386, 301 etc.
VMAXTANKS XTR34-75 is BCI group 34, deep cycle AGM battery, suitable for use as automotive, marine, wheelchair battery, or it can be used in various, both standby and cycling applications.
Although labeled as deep cycle battery, this versatile battery is true dual purpose battery, being able to provide large currents, but also tolerates frequent deep discharges. However, as the depth of discharges is increased, so does its number of cycles decreases - similarly to all other AGM batteries. Nonetheless, it is tough and durable battery, thus it is not the cheapest 75 Ah 12V AGM battery on the market...
Lithium CR2477 is non-rechargeable 3.0 volts manganese-dioxide lithium battery, labeled as 'CR2477', but also as DL2477, ECR2477, KCR2477, EB-CR2477, BR2477, LiR2477 etc.
CR2477 battery is used as watch battery, in remote controls, in toys, in medical equipment etc.
Lithium non-rechargeable 3.0 V CR2477 battery is known as the battery with the highest capacity of all lithium button/coin cell batteries.
Lithium 3.0V CR2450 battery is non-rechargeable button/coin cell battery commonly used in watches, computer motherboards, medical devices, LED flashlights, toys, remote controls, car remote keys, security systems, wearable electronics etc.
When compared with smaller 3.0V lithium batteries, CR2450 is large and powerful battery with large capacity and is often used in 'high' drain devices.
Mighty Max ML55-12 AGM battery is 12V 55Ah general purpose, deep cycle AGM (Absorbent Glass Mat) SLA (Sealed Lead Acid) battery. It features high vibration resistance and spill proof design, allowing it to be used virtually in any position.
Mighty Max ML55-12 AGM battery is commonly used as mid-size trolling motor battery, fish finder battery, for off-the-grid applications, backup and security systems, etc.
CR-V3, CRV3, ELCRV3, RLCRV3 is very popular, high-capacity single-cell lithium or lithium-ion battery, often used in high-drain devices and appliances, like flashlights, photo cameras, toys and similar.
CR-V3 is flat, rectangular battery 52.2 mm in height, 28.05 mm in width and 14.15 mm in depth and is physically very similar to two AA (R6) batteries side-by-side.
CR2 batteries are very popular cylindrical non-rechargeable 3.0V lithium batteries, commonly used in various devices like photo cameras, golf rangefinders, weapon mounted lights, tactical and EDC flashlights, security devices etc.
15270 (15266) batteries are rechargeable lithium batteries with nominal voltages between 3.0 and 3.7 volts, depending on the exact chemistry types and built in Battery Management System (BMS). Since they are very similar in dimensions with CR2 batteries, they are often labeled as 'rechargeable CR2' batteries.
SR416SW is very small button cell battery, commonly used in wrist watches, but also in calculators, credit card size devices, as CMOS battery etc.
Common labels of these batteries include SR416, SR416SW, SR416S, 337, LR416 and few more, but most reputable brands commonly use 'SR416SW', often combined with '337' label.
VMAXTANKS XTR4D-200, VMAXTANKS MB197-200 and VMAXTANKS MR197-200 are a group of 12V 200Ah, AGM SLA, Group 4D batteries. These are large, sturdy and heavy batteries, being able to store plenty of energy, ready to be delivered when required at the moment notice.
Although these batteries are very similar in size, weight and performance, they also differ in certain details that may be important for future user...
CR123A batteries are very popular cylindrical lithium batteries, commonly used in various devices like photo cameras, flashlights, security devices, military equipment, etc.
CR123A batteries come in two major versions: rechargeable and non-rechargeable CR123A batteries, both featuring different voltages, drain currents, capacities etc. That and the fact that many manufacturers come with their 'own' labels lead to slight confusion when picking the right CR123A battery.
Group 27 batteries are rather large and powerful batteries, featuring 20h capacity in 66-110 Ah range, providing 600-1000 CCA, 140-220 minutes RC etc. Their weight depends on the internal construction and it ranges between 54 and 70 pounds (24.5 - 32 kg).
Group 27 batteries physical dimensions depends on the exact battery group because there are three different, although very similar battery groups: Group 27, Group 27F and Group 27H, although they are often labeled as Group 27 Batteries.
NorthStar NSB-AGM27, NSB-AGM27F and NSB-AGM27M are versatile, dual purpose, BCI Group 27 batteries, designed to be durable and reliable power source for even the most demanding applications.
NortStar NSB-AGM27, NSB-AGM27F and NSB-AGM27M batteries are essentially the same battery, differing only in their terminal posts - depending on their intended use.
Lithium CR1616 is very popular 3.0 volts lithium primary (non-rechargeable) battery, often used in car remote keys, wrist watches, TV remotes, medical equipment, calculators, digital scales and other small electronic devices.
Due to its very long shelf life and stable voltage, CR1616 is often used as memory battery in computers, cameras, game controllers and other electronic devices.
VMAXTANKS MR-107, MB-107 and SLR-85 are BCI Size 24, AGM SLA deep cycle batteries.
These batteries feature nominal capacity of 85 Ah and nominal voltage of 12 volts. Physically they are very similar, but nonetheless, they also differ in several very important details depending on their intended purpose.
VMAXTANKS MR127-100 battery is AGM SLA, 12V 100 Ah, deep cycle, high performance battery, often used for marine, automotive and other off-the-grid applications.
VMAXTANKS MR127-100 battery is BCI Group 27 battery, featuring robust, spill-proof design, heavy duty lead tin plates, long shelf life, low self-discharge rate etc.
CR11108, CR1/3N, CR-1/3N, DL1/3N, 2L76, 2LR44, 2KL1/3N, 5008L, VL1/3N etc. are non-rechargeable 3V lithium batteries, most commonly based on the Lithium Manganese Dioxide chemistry.
Commonly, they are know as CR11108 or CR1/3N batteries and are often used in cameras, calculators, dog collars, gun sights, PDAs, computer motherboards etc.
DieHard 38232 Advanced Gold AGM Group 34 Battery is designed as starting battery for cars, trucks, RVs and similar vehicles.
DieHard 38232 is maintenance-free, spill-proof, AGM battery, with improved resistance to vibrations and increased cycle life.
Optima Batteries D27M BlueTop and D27F YellowTop Starting and Deep Cycle Batteries are versatile, dual purpose marine and automotive batteries. Optima Batteries D27M BlueTop and D27F YellowTop are AGM (Absorbent Glass Mat) SLA (Sealed Lead Acid) batteries, with the spiral wound lead plates, offering good vibration resistance, extended life, low maintenance and faster recharging.
Optima Batteries D27M BlueTop and D27F YellowTop are completely spill proof 12V AGM batteries, mountable in virtually any position.
CR2020/BR2020/VL2020 are lithium coin-cell batteries with nominal 3.0 voltage. They come in several versions: CR2020 is manganese-dioxide lithium non-rechargeable battery, BR2020 is Carbon-monofluoride lithium non-rechargeable battery and VL2020 is lithium rechargeable battery.
Depending on the exact chemistry, CR2020/BR2020/VL2020 are used in various applications requiring different battery features and characteristics.
CR2412/BR2412 are not the most common button/cell type 3V lithium non-rechargeable batteries on the market, but due to their dimensions they are often used in small card-like devices, watches, car keys, memory backup, various medical meters and similar.
And as such, when the original battery needs replacement, it is very important to find the proper one.
Lithium ion 26650 batteries are common choice for high drain devices that also require large capacity batteries, low self-discharge rate and large number number of charging and discharging cycles. Lithium ion 26650 rechargeable batteries are very similar to 18650 batteries, but they have ~2x larger volume and hence larger capacity/larger drain currents.
Most important features of 26650 rechargeable batteries are their native capacity, maximum pulse current, continuous drain current, maximum allowed charging current, protective electronics available, exact chemistry and similar.
Non-Rechargeable (disposable) zinc-air batteries have been standard hearing aid batteries for a long time. They have replaced older mercury-oxide batteries and after introducing mercury-free zinc-air batteries, they have become de facto standard for hearing aid batteries.
However, rechargeable batteries are being used more and more in everyday electronics and as such, they are slowly entering the hearing aid market as well. But, there are several very important issues that rechargeable batteries face when being used as hearing aid batteries...
SR57, LR57, 395, 399, SR927SW, AG7 etc. batteries are very popular button/coin cell non-rechargeable batteries, available in alkaline and silver-oxide chemistries and manufactured by practically all battery brands.
These batteries are commonly found in small electronic and electric devices requiring reliable power source like keychain flashlights, wrist watches, small remote controls and similar.
AA batteries are one of the most common battery sizes used in household electronic devices.
AA batteries differ in used chemistry and hence the capacity, voltage, discharging characteristics and other features very important when powering sensitive electronic equipment.
Group 31 batteries are relatively large and powerful batteries, featuring 20h capacity in 75-125 Ah range, providing 750-1250 CCA, 150-250 minutes RC etc. Their physical dimensions are approximately 13 x 6 13/16 x 9 7/16 inches (~13 x 6.8 x 9.44 inches, 330 x 173 x 240 mm), while their features depend on the battery design, intended use, chemistry and similar. Group 31 batteries are very common in marine, automotive, off-the-grid and similar applications, making them one of the most popular battery groups.
LR920 and SR920SW are popular alkaline and silver-oxide batteries commonly found in wrist and other watches, remote controls, some toys, small flashlights and similar.
These batteries are usually labeled as SR69, SR920W, SR920SW, SR920PW, SR920, SR921, SR69, 171, 370, 371, LR69, LR920, LR921, SG6, AG6 etc. leading to the confusion when proper battery equivalent and replacement battery is needed.
Fortunately, most popular battery brands use SR920SW, 371, 370, LR920 or AG6 when labeling their LR920/SR920SW batteries.
LR621 and SR621SW are very popular coin/button cell batteries often used in wrist watches, small toys, remote keys, and similar small and compact devices.
LR/SR621 batteries are manufactured by many leading brands, and can be easily found at online shops and stores.
Optima batteries are very popular automotive and marine battery brand. BCI Group 34 batteries are commonly used as starting, dual purpose and as deep cycle batteries in cars and other vehicles, in boats, off-the-grid applications etc. Optima group 34 batteries come in several, often very similar versions, but optimized for certain applications. Choosing the right one can be daunting task, but it shouldn't. Read more ...
Battle Born 100 Ah LiFePO4 12 Volt Deep Cycle Battery is lightweight and durable drop-in replacement for similar lead acid (SLA AGM or Gel Cell, or even flooded cells) batteries. It features protective electronics that monitors battery parameters, like charging and discharging currents, voltages, temperatures and similar.
Battle Born 100 Ah LiFePO4 12 Volt Deep Cycle Battery can be directly connected in series and parallel to create battery packs with larger capacities and voltages. It can be directly charged using lead-acid chargers, just one has to be cautious regarding charging currents and voltages.
Wrist watches are commonly powered using one or rarely two button/coin cell batteries, and these batteries have a limited operating lifetime. When replacing an old battery with the new one, the best practice is to use batteries recommended by the watch manufacturers.
However, finding the exact type and model can be sometimes confusing due to the different labels some battery brands are using for their batteries. Also, using silver-oxide instead of alkaline batteries can prolong the watch operating time on a single battery.
LR521, SR521, 379, AG0 button cell batteries are often used in wrist watches, toys, remotes, and similar low drain devices. These batteries are manufactured by most, if not all, most reputable battery brands and are easy to find, if you know what to look for.
Optima 8052-161 D31M BlueTop Dual Purpose Marine Battery is very popular starting and deep cycle battery for marine and automotive applications. It is maintenance free and spill-proof SLA battery that can operate in virtually any position, featuring very good both starting and deep cycle performances. It is commonly used in single battery electrical systems found at RVs, boats, yachts, and even cars.
Odyssey 31M-PC2150 is BCI group 31 battery, designed as dual purpose battery. As starting battery it can easily provide 1000+ CCAs and as deep cycle battery it comes with 205 min RC rating.
Odyssey 31M-PC2150 is AGM SLA battery, featuring increased resistance to vibrations, spill-proof design, two types of terminals, can operate in any position etc.
It is one of the heaviest group 31 batteries on the market and far from being cheap, but it is one of the best batteries in its class (if not the best) and worth every (euro)cent.
Marine batteries are designed to operate in tough conditions due to vibrations and other mechanical stress, they must be able to power various electric and electronic devices and when the main engine must be started, they must be able to provide large currents in order to start large, often multiple gasoline or even diesel engines even when not fully charged. Such requirements significantly reduce the number of potential 1000 CCA marine battery models.
CCA (Cold Cranking Amps), CA (Cranking Amps) or MCA (Marine Cranking Amps) and HCA (Hot Cranking Amps) define the maximum current that a battery is able to provide under certain conditions.
Lithium CR2025 is very popular lithium 3.0 V non-rechargeable battery, often used in car remote keys, watches, medical equipment, calculators, remote control devices, keychain LED lights and other small electronic devices. Due to its very long shelf life and stable voltage, CR2025 is often used as memory battery in computers, cameras and other electronic devices.
Thanks to its high demand, many manufacturers offer these batteries with various labels, creating slight confusion regarding CR2025 battery equivalents and replacements. Often CR2025 batteries are labeled as CR2025, DL2025, E-CR2025, SB-T14, 5003LC, BR2025, LiR2025 etc.
9-volt, E or PP3 battery is very popular 9V rectangular battery often used in portable radios, cameras, walkies-talkies, smoke alarms, alarm clocks and other applications that require slightly larger voltage from a single battery.
9V batteries can be both non-rechargeable or rechargeable batteries, featuring different chemistries.
A23 is alkaline cylindrical cell battery often used in small electronic devices requiring higher voltage, like home security systems, garage door openers, Bluetooth headsets, key-less vehicle entry systems and other similar radio-frequency transmitting and receiving devices.
AG4, LR626, LR66, 177/376/377, SR626, SR626SW batteries are very popular non-rechargeable button/coin cell batteries, available in several chemistries and manufactured by practically all battery brands. These batteries are commonly found in wrist watches and similar small electronic devices requiring reliable power source.
With all the available battery models and brands on the market, finding suitable trolling motor battery often can be daunting task, but it shouldn't be. But before getting new battery or battery pack, one should first write down few things, including size and weight of the boat, motor strength, required trolling time and of course, the funds allocated for the new trolling motor battery.
When describing batteries and their features and characteristics, many abbreviations are used.
Knowing their meanings is very important, because that is the difference between getting the right battery and the wrong battery. And the wrong battery often can cause much more damage than its money worth ...
Deep cycle batteries for recreational vehicles (RVs) have very important purpose - they power onboard electronics and electrical devices while the vehicle's main motor is not working, while being off the grid. RV deep cycle batteries must tolerate deep discharge conditions and cyclic use, but they also must be resistant to vibrations, high and low temperatures, no usage for long time (sometimes for months) etc.
And since these batteries are far from being cheap, it is really important to choose them properly, according to the individual needs and requirements.
Lithium ion 18650 batteries are very popular choice for high power devices that also require long lasting batteries in terms of capacity, low self-discharge rate and large number of charging and discharging cycles.
18650 rechargeable batteries come in countless versions, with many features, some of the most important being capacity, maximum pulse and continuous drain current, charging current, protective electronics, etc.
AG13/LR44/SR44/SR44SW/357 button/coin cell batteries are very popular batteries, commonly found in wrist watches, small flashlights, some remote control devices and other small electronic units.
According to the IEC standard, this battery should be called LR1154 (alkaline) or SR1154 (silver-oxide). Sometimes shorter, two-digit code is used: LR44 for alkaline and SR44 for silver-oxide batteries.
Many manufacturers use their own names for these batteries, but they also tend to add IEC and other standard codes, including short descriptions about the chemistry and other important features.