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| SR936SW | LR921 | |
|---|---|---|
| Size | About as wide as a pea | About as wide as a pea Same |
| Thickness | As thick as 5 credit cards stacked | As thick as 3 credit cards stacked |
| Power | 1.55 volts | 1.5 volts |
| Kind | Watch battery | Button battery |
Lasts longer: SR936SW (about 180% longer)
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In a pinch. They’re the same width and power, but LR921 is thinner. It may wobble a little and runs out about 64% sooner. SR936SW is too thick to fit where LR921 goes.
No. They’re the same width and power, but LR921 is thinner. It may wobble a little and runs out about 64% sooner. SR936SW is too thick to fit where LR921 goes.
SR936SW (about 180% longer).
| SR936SW | LR921 | |
|---|---|---|
| Diameter | 9.5 mm | 9.5 mm |
| Height | 3.6 mm | 2.1 mm |
| Nominal voltage | 1.55V | 1.5V |
| Typical capacity | 84 mAh | 30 mAh |
| Chemistry | Silver oxide | Alkaline |
| Shelf life | 5 yrs | 5 yrs |
| Operating temp | -10 to 60 °C | -10 to 60 °C |