396 / SR726W battery equivalent

Also sold as SR726W. 1.55 V with a flat discharge curve — the usual choice for quartz watches.

Chemistry

Silver oxide

Voltage

1.55 V

Size

7.9 × 2.6 mm

Inches

0.311 × 0.102 in

Drain

High drain (W)

Typical capacity

~32 mAh

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Equivalents by brand

Brand	Number
Renata	396
Energizer / Eveready	396
Maxell / Panasonic / Sony	SR726W
Varta	V396
Rayovac	396
Duracell	D396
Philips	396
Bulova	612
Timex	V
Citizen	280-52
Seiko	SB-BL
IEC	SR59
IEC size	SR726

Also known as

SR726WV396D396612V280-52SB-BLSR59SR726AG2

What it fits

Watches with extra features. 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 SR726W is about 7.9 mm across and 2.6 mm thick.

Same size, different drain

These cells share the 7.9 × 2.6 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.

FAQ

What battery replaces a 396?

Any of these are common equivalents: 396, SR726W, V396, D396, 612, V, 280-52, SB-BL. They are 1.55 V silver oxide cells, 7.9 × 2.6 mm.

Is 396 the same as SR726W?

Yes — SR726W is the IEC / Japanese-brand name for the same 396 cell.

What devices use a 396?

Watches with extra features