357 / SR44W battery equivalent

Also sold as SR44W. 1.55 V with a flat discharge curve — the usual choice for quartz watches.

Chemistry

Silver oxide

Voltage

1.55 V

Size

11.6 × 5.4 mm

Inches

0.457 × 0.213 in

Drain

High drain (W)

Typical capacity

~190 mAh

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Equivalents by brand

Brand	Number
Renata	357
Energizer / Eveready	357
Maxell / Panasonic / Sony	SR44W
Varta	V357
Rayovac	357
Duracell	D357
Philips	357
Bulova	228
Timex	J
Citizen	280-62
Seiko	SB-B9
IEC	SR44
IEC size	SR1154

Also known as

SR44WV357D357228J280-62SB-B9SR44SR1154SR1154WAG13

What it fits

High-drain watches, cameras, toys, laser pointers. 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 SR44W is about 11.6 mm across and 5.4 mm thick.

Same size, different drain

These cells share the 11.6 × 5.4 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 357?

Any of these are common equivalents: 357, SR44W, V357, D357, 228, J, 280-62, SB-B9. They are 1.55 V silver oxide cells, 11.6 × 5.4 mm.

Is 357 the same as SR44W?

Yes — SR44W is the IEC / Japanese-brand name for the same 357 cell.

What devices use a 357?

High-drain watches, cameras, toys, laser pointers