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LR626 battery equivalent and size
LR626: 1.5 V alkaline button cell, 6.8 mm × 2.6 mm, about 20 mAh (30 mWh). Same battery: AG4, 177. Also fits: SR626SW.
1.5 Vvoltage
6.8 mmdiameter, 0.268 in
2.6 mmthick, 0.102 in
≈ 20 mAhcapacity
LR626: what to know
- AG4 and 177 are the same alkaline cell; for watches, the silver oxide 377 is the better choice.
LR626 equivalents
AG4177
- 377: silver
Can I use another battery instead of an LR626?
| Battery | Size | Volts | Works? | Why |
|---|---|---|---|---|
| SR626SW | 6.8 mm × 2.6 mm | 1.55 V | Yes | Same size; silver oxide lasts longer (an upgrade). |
| SR616SW | 6.8 mm × 1.65 mm | 1.55 V | Short-term | 0.95 mm thinner: may sit loose; fine short-term. |
| LR621 | 6.8 mm × 2.15 mm | 1.5 V | Short-term | 0.45 mm thinner: may sit loose; fine short-term. |
| SR621SW | 6.8 mm × 2.15 mm | 1.55 V | Short-term | 0.45 mm thinner: may sit loose; fine short-term. |
What uses an LR626 battery?
- Toys and games
- Novelty watches
- Small lights
Silver oxide version: SR626SW, about 28 mAh vs 20 mAh, steadier voltage: better for watches, calipers and thermometers.