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| Size 5 | LR521 | |
|---|---|---|
| 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 3 credit cards stacked |
| Power | 1.45 volts | 1.5 volts |
| Kind | Hearing aid battery | Button battery |
Lasts longer: Size 5 (about 230% longer)
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No. They’re the same size, but hearing aid batteries breathe air through tiny holes to work. Don’t mix them with ordinary button batteries.
No. They’re the same size, but hearing aid batteries breathe air through tiny holes to work. Don’t mix them with ordinary button batteries.
Size 5 (about 230% longer).
| Size 5 | LR521 | |
|---|---|---|
| Diameter | 5.8 mm | 5.8 mm |
| Height | 2.5 mm | 2.1 mm |
| Nominal voltage | 1.45V | 1.5V |
| Typical capacity | 33 mAh | 10 mAh |
| Chemistry | Zinc-air | Alkaline |
| Shelf life | 3 yrs | 5 yrs |
| Operating temp | 0 to 50 °C | -10 to 60 °C |