Lithium CR2450 Battery - Brands, Equivalents and Replacements
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.
CR2450 battery features 24 mm (~0.945 inches) diameter and 5.0 mm (~0.197 inches) height and it weighs in 5.7 - 6.3+ grams (0.2 - 0.222+ ounces) range.
CR2450 battery has negative electrode made of lithium and positive electrode made of manganese-dioxide, hence their label start with 'CR'.
Standard label for lithium 2450 battery with manganese-dioxide positive electrode is CR2450, although other labels are used as well, like 5029LC, DL2450, ECR2450, CR2450N, CR-2450, CR2450EL, CR-2450EL etc.
CR2450 vs BR2450
Due to the advances in technology, 2450 batteries with carbon-monofluoride positive electrode are rare.
Labels of such batteries start with 'BR' (BR2450), but main advantages of carbon-monofluoride lithium batteries (long shelf life, very low self-discharge rate, constant output voltage) are negated by the modern CR2450 batteries. Also, BR2450 batteries are unable to provide high discharge currents required by key-less entry systems, remote controls and similar devices.
Nominal capacity of the CR2450 batteries is around 600-620 mAh, while some older models and models specifically intended for high-drain devices feature 540-580 mAh capacity. BR2450 batteries (if found) feature capacity around 500mAh.
Shelf life of the CR2450 batteries ranges from 3 years (cheaper models/brands) to 10+ years, while BR2450 batteries commonly have 10+ years shelf life.
Having said that, CR2450 from reputable brand can easily match BR2450 battery - hence BR2450 batteries are really hard to find these days.
Note: most manufacturers label their CR2450 as BR2450 too, in order to emphasize the fact that their CR2450 can be used as a replacement for BR2450 battery - in most cases, this is correct, just be sure to check specified shelf-life of such CR2450 battery.
CR2450 vs. LiR2450
LiR2450 is typical label for rechargeable 2450 battery. Depending on the exact chemistry used, LiR2450 battery typically feature nominal voltages of 3.0, 3.2 and 3.6 volts.
3.0V rechargeable LiR2450 batteries can be used as direct replacement for CR2450 batteries since they feature same (similar) output voltage that never exceeds 3.0 volts and pose no threat for sensitive electronics.
3.2V rechargeable LiR2450 batteries are commonly based on the Lithium Iron Phosphate (LiFePO4) chemistry and although they feature only 0.2 volts larger output voltage, some sensitive electronics may have issues because of that - before using 3.2V LiR2450 batteries in such devices, check the manual of your device.
3.6 - 3.7V rechargeable LiR2450 batteries are based on other lithium ion chemistries and since they feature 0.6-0.7V higher voltage than standard CR2450, before using them in your devices, be sure to check the manual - such difference is large enough to easily damage sensitive electronics or to make device unreliable. Unreliable operation is not recommended, especially not for medical and security devices - better safe than sorry.
On the other hand, typical capacity of the LiR2450 is in the 100-125 mAh range and can be recharged 500-800 times.
Although rechargeable LiR2450 batteries feature higher self-discharge rate (1-5% per month, compared with ~1% annually self-discharge rate of high quality CR2450 batteries), in devices that require plenty of energy on a daily basis, LiR2450 batteries can save some money.
Note: Never, but really never charge LiR2450 batteries with the chargers other than those recommended by their manufacturers!
CR2430 vs CR2450 vs CR2477
Non-rechargeable 3.0 volts lithium CR2430, CR2450, CR2477 batteries feature the same diameter of 24 mm (~0.945 inches), but different height of 3.0, 5.0 and 7.7 mm (~0.118, 0.197 and 0.303 inches) respectively.
Thus, their nominal capacity differ:
- CR2430: 270-290 mAh,
- CR2450: 600-620 mAh,
- CR2477: ~1000 mAh.
Certain devices come with a battery compartment insert, allowing them to be powered with all three models (or just of two of them), with no battery contact issues.
Since CR2477 feature practically the highest nominal capacity of all lithium button cell batteries, devices powered with these batteries will have the longest operating time between batteries needing a replacement.
On the other hand, if you are satisfied with the performance of your device(s) using CR2450, feel free to continue to use them - after all, 'if it is not broken, don't fix it!' :)
CR2450 vs CR2032
CR2450 is often compared with very popular lithium 3.0 volts CR2032 battery.
Output voltages of these batteries are the same for the same chemistry types.
However, due to the larger volume of CR2450, it features larger capacity - 600-620 mAh (CR2450) vs 210-230 mAh (CR2032). This, almost 3x larger capacity, is the reason why CR2450 is preferred choice in some 'high' drain devices and not CR2032 battery.
Note: some devices designed for CR2450 feature special battery holder that allows the user to power the device with both CR2450 and CR2032, which is great in terms of getting proper batteries, but with almost 3x smaller capacity, one can expect to replace CR2032 batteries some 3x more often than CR2450 batteries.
For short, if possible, go for CR2450 batteries :)
CR2450 With Soldering Tabs
Some devices use CR2450 batteries soldered to their motherboards via soldering tabs.
Although soldering tabs may be soldered directly onto any 'CR' or 'BR' battery at home, at least in theory, in order to avoid overheating the battery and possible damage and/or shortening its operating life, it is highly recommended to purchase CR2450 with soldering tabs soldered by the manufacturer.
Hint: soldering tabs are added to the battery by the manufacturer prior battery assembling or tabs are soldered using various 'cold' soldering processes (ultrasonic soldering, for example) after battery assembly. Or both.
CR2450 Battery Safety
Like all other litihum batteries, if swallowed, CR2450 battery can be very dangerous, not because of the toxic elements (CR2450 batteries are commonly free of mercury, lead, cadmium and similar heavy metals), but because the battery may cause heavy internal injuries and burns due to the electrolysis.
If the battery is swallowed, CR2450 or any other, call local emergency center and act according to their instruction - induce vomiting and similar.
That is why most brands manufacture CR2450 and similar batteries in 'child safe' packages.
But, just in case, stay safe and keep batteries away from kids and pets.
Most Popular CR2450 Battery Brands
Most popular CR2450 battery brands include Panasonic, Sony, Duracell, Energizer and other most popular battery brands in general.
Their CR2450 batteries typically feature 600-620 mAh capacity, 7-10+ years shelf-life, can withstand 1-3 mAh discharge currents and are easy to find at online shops.
However, less popular brands often manufacture cheaper batteries of similar and sometimes even better characteristics. But, some sellers overestimate their battery ratings in order to present their batteries better than they actually are. Just my 2c ...
Panasonic CR2450 Lithium 3.0V Battery
Panasonic CR2450 lithium non-rechargeable 3.0 volts battery is often labeled as CR-2450EL.
It is designed to be used in temperature range between -22°F (-30°C) and 140°F (+60°C), with very low self-discharge rate and long shelf-life - on average, after 10 years, Panasonic CR2450 batteries still have ~90% of their original capacity.
On average, Panasonic CR2450 battery weighs 6.3 grams, it contains no mercury and is unlikely to leak during its operating lifetime.
Panasonic CR2450 nominal capacity is 620 mAh, although it also depends on the cutoff voltage of the powered device.
Continuous standard drain for Panasonic CR2450 battery is 0.2 mA.
Sony CR2450 Battery
Sony CR2450 battery is another popular CR2450 battery.
Operating temperature range of the Sony CR2450 batteries is -22°F (-30°C) to 158°F (70°C) and when being stored at room temperature, its annual self-discharge rate is ~1% - Sony CR2450 also has ~90% of its original capacity after 10 years of being stored.
Sony CR2450 nominal capacity is ~610 mAh, it features high leakage protection, with the average weight of 6.6 grams.
Continuous standard drain for Sony CR2450 battery is also 0.2 mA.
Duracell CR2450 Battery - DL2450 vs CR2450
Duracell CR2450 battery is commonly labeled as DL2450 battery - simply put, DL2450 battery is Duracell CR2450 battery.
DL2450 battery typical weight is ~6.3 grams, with recommended storage temperature between 41°F (+5°C) and 86°F (+30°C) and recommended operating temperature of -22°F (-30°C) and 140°F (+60°C).
Typical capacity of the DL2450 battery is ~620 mAh, with maximum continuous drain of 0.3 mA (with no loss of capacity!).
Energizer CR2450 Battery
Energizer CR2450 battery features nominal capacity of 620 mAh and it weighs on average around 6.8 grams.
With annual self-discharge rate of ~1%, its shelf life is 10+ years - it keeps ~90% of its nominal capacity even after 10 years of storage at room temperatures.
Its operating temperatures are 'standard' -22°F (-30°C) to 140°F (60°C), with maximum continuous drain of 0.39 mA @2.9 volts.
However, Energizer CR2450 batteries are designed to withstand 9.0 mA drain for 2 seconds @2.7 volts, 12x per day, which is very important for high drain devices that are used on a daily basis.
Note: other CR2450 batteries tolerate similar use, but only the Energizer clearly states what their batteries are capable of.
Varta CR2450 Battery
Varta CR2450 battery also feature 620 mAh capacity and it weighs on average 6.2 grams.
Recommended storage temperature is between -67°F (-55°C - yes, we checked this value more than twice!) and 158°F (70°C), while recommended operating temperature is -4°F (-20°C) and 158°F (70°C).
Maximum continuous drain current is ~0.5 mA down to 2 volts.
Note: Varta doesn't state actual self-discharge rate of their CR2450 batteries.
Renata CR2450 Battery
Renata manufactures two models of CR2450 batteries: CR2450N and CR2450N-MFR.
Renata CR2450N features typical capacity of 540 mAh and it weighs ~5.9 grams.
Maximum continuous drain current with capacity loss down to 70% of nominal capacity (~380 mAh actual capacity) is 3.0 mA, with standard continuous drain current of 0.8 mA.
Renata CR2450N temperature operating range is -40°F (-40°C) and 185°F (85°C), with annual self-discharge rate of less than 1%, when stored at room temperature.
Renata CR2450N-MFR features typical capacity of 580 mAh and it weighs ~5.9 grams.
Renata CR2450N-MFR also features temperature operating range between -40°F (-40°C) and 185°F (85°C), with annual self-discharge rate of less than 1%, when stored at room temperature.
Maximum continuous drain current is 3.0 mA (no info about capacity loss), with standard continuous drain current of 1.3 mA.
Long Story Short: CR2450 batteries are tough and reliable lithium manganese dioxide batteries, able to provide relatively high drain currents and keep output voltages above 2.0 volts.
Reputable CR2450 brands are typical reputable battery brands like Panasonic, Sony, Duracell, Energizer, Varta, Renata and similar.
If you are looking for a good CR2450 battery, batteries from these brands will certainly meet your expectations.
Just be sure to keep these battery away from kids and pets and recycle them properly.