SR44
Silver oxide cell in the same footprint as the LR44. Holds a flatter discharge curve, which matters for watches and light meters.
- Voltage
- 1.55 V
- Chemistry
- Silver Oxide
- Size
- 11.6 × 5.4 mm
- Capacity
- 170–200 mAh
Specifications
| Type | Button Cell |
|---|---|
| Chemistry | Silver Oxide |
| Nominal voltage | 1.55 V |
| Diameter | 11.6 mm |
| Height | 5.4 mm |
| Typical capacity | 170–200 mAh |
| Rechargeable | No |
| Also sold as | 357, 303, SR44W, V357 |
Equivalent batteries
These codes describe the same physical cell as the SR44.
Can I replace SR44 with…
Cells that fit the same space but differ in chemistry or voltage.
Check before you swap. Batteries with similar dimensions are not always interchangeable with the SR44. Always verify voltage, chemistry and the requirements printed in your device manual before fitting a replacement.
SR44 questions
What batteries are equivalent to the SR44?
The SR44 is sold as 357, 303, SR44W. All of these describe the same 11.6 × 5.4 mm silver oxide cell at 1.55 V.
Can I use a LR44 instead of a SR44?
In many low-drain devices, yes — the sizes match. Check the voltage and chemistry against your device's requirement first, because a small voltage difference can matter in calibrated equipment.
How long does a SR44 last?
A SR44 holds a typical 170–200 mAh. Real runtime depends entirely on how much current your device draws and whether it is used continuously.
Is the SR44 rechargeable?
No. The SR44 is a single-use cell and should not be recharged.
Related batteries
Other button cells in the index.