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| LR43 | SR42 | |
|---|---|---|
| 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 5 credit cards stacked |
| Power | 1.5 volts | 1.55 volts |
| Kind | Button battery | Watch battery |
Lasts longer: Same
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In a pinch. They’re the same width and power, but SR42 is thinner. It may wobble a little and runs out about 0% sooner. LR43 is too thick to fit where SR42 goes.
No. They’re the same width and power, but SR42 is thinner. It may wobble a little and runs out about 0% sooner. LR43 is too thick to fit where SR42 goes.
They last about the same.
| LR43 | SR42 | |
|---|---|---|
| Diameter | 11.6 mm | 11.6 mm |
| Height | 4.2 mm | 3.6 mm |
| Nominal voltage | 1.5V | 1.55V |
| Typical capacity | 100 mAh | 100 mAh |
| Chemistry | Alkaline | Silver oxide |
| Shelf life | 5 yrs | 5 yrs |
| Operating temp | -10 to 60 °C | -10 to 60 °C |