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390 battery (SR1130SW)
SR1130SW: 1.55 V silver oxide button cell, 11.6 mm × 3.05 mm, about 80 mAh (124 mWh). Same battery: 390, SR54. Also fits: LR1130.
1.55 Vvoltage
11.6 mmdiameter, 0.46 in
3.05 mmthick, 0.120 in
≈ 80 mAhcapacity
SR1130SW: what to know
- 390 is low drain and 389 high drain; its alkaline twin, the LR1130 (AG10), is the one usually found in calculators.
SR1130SW equivalents
390SR54
- 389: high-drain SR1130W
- AG10: alkaline
- LR1130: alkaline
Can I use another battery instead of an SR1130SW?
| Battery | Size | Volts | Works? | Why |
|---|---|---|---|---|
| LR1130 | 11.6 mm × 3.05 mm | 1.5 V | Yes | Same size; alkaline is cheaper but fades sooner. |
| LR1120 | 11.6 mm × 2.05 mm | 1.5 V | Short-term | 1 mm thinner: may sit loose; fine short-term. |
| SR1120SW | 11.6 mm × 2.05 mm | 1.55 V | Short-term | 1 mm thinner: may sit loose; fine short-term. |
| SR1136SW | 11.6 mm × 3.6 mm | 1.55 V | No | 0.55 mm thicker: will not fit. |
| LR43 | 11.6 mm × 4.2 mm | 1.5 V | No | 1.15 mm thicker: will not fit. |
What uses an SR1130SW battery?
- Watches
- Calculators
- Small toys
390 = low drain (analog watches), 389 = high drain (digital, backlights). Same 11.6 mm × 3.05 mm cell; either works in most watches.
Alkaline version: LR1130 (AG10), about 60 mAh vs 80 mAh; cheaper but its voltage sags.