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| SR916SW | LR921 | |
|---|---|---|
| Size | About as wide as a pea | About as wide as a pea Same |
| Thickness | As thick as 2 credit cards stacked | As thick as 3 credit cards stacked |
| Power | 1.55 volts | 1.5 volts |
| Kind | Watch battery | Button battery |
Lasts longer: LR921 (about 3% longer)
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No. They’re the same width and power, but SR916SW is thinner. It may wobble a little and runs out about 3% sooner. LR921 is too thick to fit where SR916SW goes.
In a pinch. They’re the same width and power, but SR916SW is thinner. It may wobble a little and runs out about 3% sooner. LR921 is too thick to fit where SR916SW goes.
LR921 (about 3% longer).
| SR916SW | LR921 | |
|---|---|---|
| Diameter | 9.5 mm | 9.5 mm |
| Height | 1.6 mm | 2.1 mm |
| Nominal voltage | 1.55V | 1.5V |
| Typical capacity | 29 mAh | 30 mAh |
| Chemistry | Silver oxide | Alkaline |
| Shelf life | 5 yrs | 5 yrs |
| Operating temp | -10 to 60 °C | -10 to 60 °C |