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| SR43 | MR44 | |
|---|---|---|
| Size | About as wide as a shirt button | About as wide as a shirt button Same |
| Thickness | As thick as 6 credit cards stacked | As thick as 7 credit cards stacked |
| Power | 1.55 volts | 1.4 volts |
| Kind | Watch battery | Button battery |
Lasts longer: MR44 (about 104% longer)
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No. They give different amounts of power (1.55 volts vs 1.4 volts). The wrong one can damage your device or simply won’t work.
No. They give different amounts of power (1.55 volts vs 1.4 volts). The wrong one can damage your device or simply won’t work.
MR44 (about 104% longer).
| SR43 | MR44 | |
|---|---|---|
| Diameter | 11.6 mm | 11.6 mm |
| Height | 4.2 mm | 5.4 mm |
| Nominal voltage | 1.55V | 1.4V |
| Typical capacity | 120 mAh | 245 mAh |
| Chemistry | Silver oxide | Mercury oxide |
| Shelf life | 5 yrs | 5 yrs |
| Operating temp | -10 to 60 °C | -10 to 60 °C |