CellChart
Silver-oxide watch (SR)

SR1130W battery: equivalents & specs

The SR1130 is a 1.55 volt silver-oxide cell, 11.6 mm across and 3.05 mm tall, with a healthy 70 to 85 mAh. The high-drain version is the 389 (SR1130W) and the low-drain watch version the 390 (SR1130SW). Its alkaline twin is the ubiquitous LR1130/AG10.

SR1130W battery drawing: 11.6 mm across, 3.05 mm thick SR1130W 1.55V + ⌀ 11.6 mm 3.05 mm
SR1130W, face and side profile, drawn to scale: 11.6 mm across, 3.05 mm thick.
Voltage
1.55 V
Size (D×H)
11.6 × 3.05 mm
Chemistry
Silver oxide (Ag2O)
Capacity
70-85 mAh

Same battery, other names

Every code below is the exact same cell as SR1130W. Any of them will fit and work identically.

389SR54V389SR1130SW (390, low drain)

Compatible replacements

  • LR1130 / AG10: Alkaline same-size cell, common in laser pointers and toys; the silver cell is the watch-grade option.

Buying and replacement notes

This size lives a double life: as the 389/390 it is a respected watch and instrument cell, while its alkaline sibling the AG10 fills laser pointers and dollar-store gadgets by the million. If a watch takes this size, fit the 390; if a device chews through AG10s, a 389 lasts noticeably longer for a small premium. Heights matter in this diameter: the 389 sits between the 391 and the much taller 386 and 357.

Commonly used in

watchescalculatorslaser pointerssmall instruments

Need a replacement?

Shop SR1130W batteries on Amazon →

Comparisons

LR1130 vs 389

⚠️ Keep away from children. Swallowed button batteries, especially 20 mm lithium coins, cause severe injury within hours. If a child swallows one, call the 24/7 National Battery Ingestion Hotline (US) at 800-498-8666 or poison control at 800-222-1222 immediately. What every parent should know.

Frequently asked questions

Is the 389 the same as the LR1130?
Same size, different chemistry. The 389 is silver oxide at 1.55 V with 80-ish mAh and a flat discharge; the LR1130 (AG10) is 1.5 V alkaline with around 60 mAh that sags over its life. They interchange physically at 11.6 x 3.05 mm.
389 or 390: which does my device need?
Both are SR1130 cells in the same case. Pick the 390 (SW) for analog watches and other steady low-drain loads, and the 389 (W) for devices with pulses or higher draw such as instruments and pointers. Either will physically work in both roles.
How long does a 390 last in a watch?
Three years or so in a standard analog movement is common, thanks to capacity well above the popular smaller watch cells. As always with silver oxide, the watch keeps accurate time until the cell is nearly spent, then stops within days.

More Silver-oxide watch (SR) cells

SR416SWSR512SWSR516SWSR521SWSR527SWSR616SWSR621SWSR626SWSR716SWSR721SW