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| LR754 | LR721 | |
|---|---|---|
| Size | About as wide as a pea | About as wide as a pea Same |
| Thickness | As thick as 7 credit cards stacked | As thick as 3 credit cards stacked |
| Power | 1.5 volts | 1.5 volts Same |
| Kind | Button battery | Button battery |
Lasts longer: LR754 (about 189% longer)
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In a pinch. They’re the same width and power, but LR721 is thinner. It may wobble a little and runs out about 65% sooner. LR754 is too thick to fit where LR721 goes.
No. They’re the same width and power, but LR721 is thinner. It may wobble a little and runs out about 65% sooner. LR754 is too thick to fit where LR721 goes.
LR754 (about 189% longer).
| LR754 | LR721 | |
|---|---|---|
| Diameter | 7.9 mm | 7.9 mm |
| Height | 5.4 mm | 2.1 mm |
| Nominal voltage | 1.5V | 1.5V |
| Typical capacity | 52 mAh | 18 mAh |
| Chemistry | Alkaline | Alkaline |
| Shelf life | 5 yrs | 5 yrs |
| Operating temp | -10 to 60 °C | -10 to 60 °C |