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| SR44 | Size 675 | |
|---|---|---|
| Size | About as wide as a shirt button | About as wide as a shirt button Same |
| Thickness | As thick as 7 credit cards stacked | As thick as 7 credit cards stacked Same |
| Power | 1.55 volts | 1.45 volts |
| Kind | Watch battery | Hearing aid battery |
Lasts longer: Size 675 (about 288% 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 675 (about 288% longer).
| SR44 | Size 675 | |
|---|---|---|
| Diameter | 11.6 mm | 11.6 mm |
| Height | 5.4 mm | 5.4 mm |
| Nominal voltage | 1.55V | 1.45V |
| Typical capacity | 160 mAh | 620 mAh |
| Chemistry | Silver oxide | Zinc-air |
| Shelf life | 5 yrs | 3 yrs |
| Operating temp | -10 to 60 °C | 0 to 50 °C |