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LR1120 battery equivalent and size
LR1120: 1.5 V alkaline button cell, 11.6 mm × 2.05 mm, about 40 mAh (60 mWh). Same battery: AG8, 191, LR55. Also fits: SR1120SW.
1.5 Vvoltage
11.6 mmdiameter, 0.46 in
2.05 mmthick, 0.081 in
≈ 40 mAhcapacity
LR1120: what to know
- AG8, 191 and LR55 are the same cell; the silver oxide version is the 381 / 391 (SR1120SW).
LR1120 equivalents
AG8191LR55
- 381: silver
Can I use another battery instead of an LR1120?
| Battery | Size | Volts | Works? | Why |
|---|---|---|---|---|
| SR1120SW | 11.6 mm × 2.05 mm | 1.55 V | Yes | Same size; silver oxide lasts longer (an upgrade). |
| LR1130 | 11.6 mm × 3.05 mm | 1.5 V | No | 1 mm thicker: will not fit. |
| SR1130SW | 11.6 mm × 3.05 mm | 1.55 V | No | 1 mm thicker: will not fit. |
| SR1136SW | 11.6 mm × 3.6 mm | 1.55 V | No | 1.55 mm thicker: will not fit. |
| LR43 | 11.6 mm × 4.2 mm | 1.5 V | No | 2.15 mm thicker: will not fit. |
What uses an LR1120 battery?
- Calculators
- Toys
Silver oxide version: SR1120SW, about 45 mAh vs 40 mAh, steadier voltage: better for watches, calipers and thermometers.