390 / SR1130SW battery equivalent

Also sold as SR1130SW. 1.55 V with a flat discharge curve — the usual choice for quartz watches.

Chemistry

Silver oxide

Voltage

1.55 V

Size

11.6 × 3 mm

Inches

0.457 × 0.118 in

Drain

Low drain (SW)

Typical capacity

~80 mAh

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Equivalents by brand

Brand	Number
Renata	390
Energizer / Eveready	390
Maxell / Panasonic / Sony	SR1130SW
Varta	V390
Rayovac	390
Duracell	D390
Bulova	603
Citizen	280-24
Seiko	SB-AU
IEC	SR54
IEC size	SR1130

Also known as

SR1130SWV390D390603280-24SB-AUSR54SR1130SG10

What it fits

Analog watches. Confirm the printed number or measure the old cell before you buy — a 0.5 mm height difference will not seat correctly.

IEC names encode chemistry and size. SR is silver oxide, LR is alkaline, and CR is 3 V lithium. The digits are diameter and height in tenths of a millimeter, so SR1130SW is about 11.6 mm across and 3 mm thick.

Same size, different drain

These cells share the 11.6 × 3 mm can. Low-drain (SW) is for simple analog watches. High-drain (W) handles lights, alarms, and chronographs. A modern multi-drain cell can usually cover both.

Same size, different chemistry

These fit the same cavity but are not true equivalents. Voltage and discharge curve differ — do not use them as a silent swap in a quartz watch.

FAQ

What battery replaces a 390?

Any of these are common equivalents: 390, SR1130SW, V390, D390, 603, 280-24, SB-AU, SR54. They are 1.55 V silver oxide cells, 11.6 × 3 mm.

Is 390 the same as SR1130SW?

Yes — SR1130SW is the IEC / Japanese-brand name for the same 390 cell.

What devices use a 390?

Analog watches