AG13, SG13, LR1154, SR44, SR44SW, 303, 357, A76, LR44 Battery Equivalents
AG13/LR44/SR44/SR44SW/357 button/coin cell batteries are very popular batteries, commonly found in wrist watches, small flashlights, calculators, 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 (or SR44SW) 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.
LR1154 (alkaline) or SR1154 (silver-oxide) are button/coin cell batteries 11.6 mm in diameter and 5.4 mm in height. Their capacity depends on the used chemistry, but also a cut-off voltage of the used device.
- AG13 vs SG13: AG13 should be 'alkaline G13' and SG13 should be 'silver-oxide G13' battery. However, sometimes manufacturers mark silver-oxide batteries with both SG13 (correct) and AG13 (not so correct) to emphasize that their battery is a replacement for AG13/LR44/LR1154 battery.
- if the battery code starts with the 'L', then it is a 'most probably' alkaline coin cell.
- if the battery code starts with the 'S', then it is a 'silver-oxide' coin cell.
- if the battery code starts with the 'P', then it is a 'zinc-air' coin cell.
- if the battery code starts with the 'M' or 'N', then it is a 'mercury-oxide' coin cell. However, due to the presence of mercury, these batteries are no longer in use.
- if the battery code after the digits contains 'P', then it is the battery with potassium hydroxide electrolyte.
- if the battery code after the digits contains 'S', then it is the battery with sodium hydroxide electrolyte.
- if the battery code after the digits doesn't contain 'P' or 'S', then most probably that battery contains organic electrolyte.
- if the battery code after the digits contains 'W', then the battery complies with the IEC 60086-3 watch batteries standard.
AG13/LR44/SR44/SR44SW/357 Battery Chemistries Comparison Chart
Comparison and examples of the button/coin 11.6 x 5.4 mm cell batteries are given in the following table.
|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||LR44, 76A, AG13, LR1154, A76||SR44W, SR44, SR44SW, 157, 357, 303, SG13, AG13, S76, A76, SR1154||675, Blue Tab, ZA675, PR44, 7003ZD||MR44, MR1154|
|Typical Capacity||110-130 mAh||150-200 mAh||600-700 mAh||180-200 mAh|
|Amazon Link||LR44 AG13 Battery||SR44 357 Battery||PR44 Battery||No longer in use.|
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Common AG13/LR44/SR44/SR44SW/357 Chemistries
Mercury-oxide batteries are no longer in use due to the mercury content, which is not the most environment-friendly metal - to say the least.
Zinc-air batteries have slightly lower voltage (1.4 V vs 1.5 V) when compared with alkaline batteries, but they have a rather large capacity of 600-700 mAh.
These batteries use oxygen from the air and wet electrolyte - prior to the use, the tab is removed and the air enters the battery. However, when electrolyte dries out, the battery is dead even if it hasn't been depleted by the use.
The price of the battery is acceptable and not higher than the price of other LR44/SR44 batteries.
Silver-oxide batteries have a slightly higher nominal voltage (1.55 V vs 1.5 V) when compared with alkaline batteries, but unlike alkaline batteries, this voltage remains fairly constant during use, with a cut-off voltage around 1.2V. Also, silver-oxide batteries have a larger capacity when compared with alkaline batteries.
These batteries are the preferred choice for powering watches, calculators, and similar small electronic devices. Such devices can have reliability issues when being powered by alkaline batteries due to the voltage drop.
Silver-oxide batteries cost slightly more than alkaline batteries, but their features and performances IMHO justify the price difference. When buying larger packages, the price difference is usually negligible.
Alkaline batteries are on the market for a long time - they are cheap and reliable and have a decent capacity of 110-130 mAh. Since their voltage drops during the use, their capacity depends on the cut-off voltage of the used device - if it is some digital watch that signals at 1.2V battery voltage that it is time to change the battery, then these batteries are not recommended for such devices.
But, for general use in toys, small flashlights, and similar applications, they are good to go.
LR44 Batteries Cross Reference Chart
The following cross reference chart lists some of the most popular LR44, SR44, and 675 battery models, with their most important features and specifications:
|Battery||Chemistry||Nominal and Cutoff Voltages||Capacity||Operating Temperature||Annual Self-Discharge Rate||Discharge Current||Datasheet|
|Duracell 675||Zinc Air||1.45V, 1.1V||625 mAh, 620Ω @21°C down to 1.1V||0°C to 50°C||4 years (unactivated) @21°C||-||Duracell 675|
|Duracell 76A/LR44||Alkaline||1.5V, 0.9/1.2V||130 mAh, 6k8Ω @20°C down to 1.2V||-10°C to +60°C||<10% @20°C||-||Duracell 76A/LR44|
|Duracell D303/D357||Silver Oxide||1.55V, 0.9/1.2V||170 mAh, 6k8Ω @20°C down to 0.9V||0°C to +60°C||<10% @20°C||~0.229 mA @1.55V 6k8Ω @20°C||Duracell D303/D357|
|Energizer 357/303||Silver Oxide||1.55V, 1.2V||150 mAh, 6k8Ω @21°C down to 1.2V||-||~2% @20°C||0.204 mA @1.39V @21°C||Energizer 357/303|
|Energizer 675||Zinc Air||1.4V, 1.05V||575 mAh, IEC-STD at 15/5 mA @21°C down to 1.05V||-||-||-||Energizer 675|
|Energizer A76||Alkaline||1.5V, 0.9V||175 mAh, 6k8Ω @21°C down to 0.9V||-||-||0.191 mA @1.30V @21°C||Energizer A76|
|Energizer 357/303||Silver Oxide||1.55V, 1.2V||150 mAh, 6k8Ω, @21°C, down to 1.2V||-||~2% @20°C||204μA @1.39V 6k8Ω||Energizer 357/303|
|Eurobatt AG13 LR44||Alkaline||1.5V, 0.9V||130 mAh, 1.0 kΩ @20±2°C down to 0.9V||-||-||0-10 mA||Eurobatt AG13 LR44|
|muRata LR44||Alkaline||1.5V, 0.9V||150 mAh, down to 0.9V||-10°C to +60°C||-||~0.3 mA @1.50V 4k7Ω @23°C||muRata LR44|
|muRata SR44||Silver Oxide||1.55V, 1.2V||155 mAh, down to 1.2V||-10°C to +60°C||-||~0.3 mA @1.55V 4k7Ω @23°C||muRata SR44|
|Rayovac 303/357||Silver Oxide||1.55V, 1.2V||-||-10°C to 65°C||10 years @20°C||~0.22 mA @1.55V 6k8Ω @20°C||Rayovac 303/357|
|Rayovac 675||Zinc Air||1.45V, 1.05V||~535 mAh, IEC-STD at 15/5 mA down to 1.05V||-10°C to 50°C||4 years (unactivated) @21°C||-||Rayovac 675|
|Renata 303 Low Drain||Silver Oxide||1.55V, 1.2V||175 mAh, 8k25Ω @20°C down to 1.2V||-10°C to 60°C||<5% @20°C||~0.189 mA @1.55V 8k25Ω @20°C||Renata 303 Low Drain|
|Renata 357 High Drain||Silver Oxide||1.55V, 1.2V||190 mAh, 5k62Ω @25°C down to 1.2V||-10°C to 60°C||<10% @20°C||~0.272 mA @1.55V 5k62Ω @20°C||Renata 357 High Drain|
|Renata ZA675||Zinc Air||1.45V, 1.05V||660 mAh||0°C to +45°C||<5% annually unactivated @20°C||-||Renata ZA675|
|Varta LR44||Alkaline||1.5V, 0.9V||155 mAh, 5k6Ω @20°C down to 0.9V||-10°C to +65°C||-||0.265mA||Varta LR44|
As one can see, while nominal and cutoff voltages are more or less the same, nominal capacities differ, but also differ the conditions under which those capacities were measured.
Batteries Similar to LR44/SR44/SR44SW
LR44/SR44/SR44SW batteries can be used to replace not just button 11.6x5.4 mm coin cells, but also to replace larger batteries as well.
Lithium non-rechargeable CR11108 or CR1/3N batteries feature 3.0 nominal voltage and nominal capacity in 160-170 mAh range.
Their diameter is 11.6 mm and their height is 10.8 mm - exactly the same dimensions of two LR44/SR44/SR44SW batteries stacked vertically.
CR11108 or CR1/3N batteries are commonly used in cameras, calculators, dog collars, gun sights, PDAs, computer motherboards, etc.
Sometimes people replace one CR11108 battery with two LR44/SR44 batteries directly in the device, creating a battery pack with a nominal voltage of 3.1 volts (3.0 volts for alkaline LR44 battery) with nominal capacity in the 150-200 mAh range (110-150 mAh for alkaline battery).
For more about CR11108 batteries, feel free to check our CR11108, CR1/3N, CR-1/3N, DL1/3N, 2L76, 2LR44 3V Lithium Non-Rechargeable Battery Equivalents and Replacements article.
4LR44 or 4SR44 battery is a cylindrical battery describing its internal construction with its label.
4LR44/4SR44 batteries are just four LR44 or four SR44SW batteries stacked together to create a battery with a nominal voltage of 6 (4LR44) or 6.2 (4SR44) volts. Their typical capacity is 110-150 mAh for 4LR44 and 150-200 mAh for 4SR44 battery.
Physical dimensions of the 4LR44/4SR44 batteries is 25.2 mm in height and 13 mm in diameter - some manufacturers deliver their devices with plastic battery holder, allowing the use of either 4LR44/4SR44 batteries or four LR44/SR44 batteries.
Note: four LR44/SR44 batteries stacked vertically feature a diameter of 11.6 mm and a height of 21.6 mm, thus requiring the battery holder to fit a 25.2x13 mm battery compartment.
4LR44/4SR44 batteries are used in film cameras, medical instruments, some flashlights, dog collars, etc.
LR44/SR44 Battery Safety Concerns
LR44/SR44 batteries are shiny objects and look rather appealing to curious kids and pets that may swallow LR44/SR44 or any similar small batteries. Most manufacturers package LR44/SR44 and other smaller batteries in the packages labeled as 'kids and pets safe' - it means that even adults will have trouble opening the package and getting the battery out. However, don't ever estimate kids and pets when trying to get something that they want, especially if it is forbidden ...
Despite modern batteries not having mercury, cadmium, or similar heavy metals or other dangerous pollutants, button/coin and similar batteries are very dangerous when swallowed - body liquids close the circuit between the anode (negative) and the cathode (positive) causing local electrolysis and buildup of various, very aggressive chemicals, including a sodium hydroxide (caustic soda) which damages the surrounding tissue rather quickly, causing serious injuries or even death.
So, if the LR44/SR44 or any other battery gets swallowed by the kid or pet (or even adult, but why would ...?!) call the emergency services right away and do as instructed (most often induce vomiting right away - just act as instructed).
Please, this is a serious warning, so act accordingly ...
Long Story Short: if you are unsure which AG13/LR44/SR44/SR44SW/357 battery to buy, go for a reliable silver-oxide SR44/357 battery with good reviews from a reputable seller, even if it means paying slightly more.
If you need a hearing aid battery, a good 675/P44 battery from a good company will be just fine.