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| LR521 | LR527 | |
|---|---|---|
| Size | About as wide as a pencil eraser | About as wide as a pencil eraser Same |
| Thickness | As thick as 3 credit cards stacked | As thick as 4 credit cards stacked |
| Power | 1.5 volts | 1.5 volts Same |
| Kind | Button battery | Button battery |
Lasts longer: LR527 (about 20% longer)
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No. They’re the same width and power, but LR521 is thinner. It may wobble a little and runs out about 17% sooner. LR527 is too thick to fit where LR521 goes.
In a pinch. They’re the same width and power, but LR521 is thinner. It may wobble a little and runs out about 17% sooner. LR527 is too thick to fit where LR521 goes.
LR527 (about 20% longer).
| LR521 | LR527 | |
|---|---|---|
| Diameter | 5.8 mm | 5.8 mm |
| Height | 2.1 mm | 2.7 mm |
| Nominal voltage | 1.5V | 1.5V |
| Typical capacity | 10 mAh | 12 mAh |
| Chemistry | Alkaline | Alkaline |
| Shelf life | 5 yrs | 5 yrs |
| Operating temp | -10 to 60 °C | -10 to 60 °C |