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Silver-oxide watch (SR)

SR516SW battery: equivalents & specs

The SR516SW, sold as the 317, is a small 1.55 volt silver-oxide watch cell, 5.8 mm across and 1.6 mm tall, carrying about 10 mAh. It sits between the ultra-thin 335 and the taller 379 in the 5.8 mm family of watch batteries.

SR516SW battery drawing: 5.8 mm across, 1.6 mm thick SR516SW 1.55V + ⌀ 5.8 mm 1.6 mm
SR516SW, face and side profile, drawn to scale: 5.8 mm across, 1.6 mm thick.
Voltage
1.55 V
Size (D×H)
5.8 × 1.6 mm
Chemistry
Silver oxide (Ag2O)
Capacity
10-11 mAh

Same battery, other names

Every code below is the exact same cell as SR516SW. Any of them will fit and work identically.

317

Buying and replacement notes

Three common cells share the 5.8 mm diameter: the 335 at 1.25 mm, this 317 at 1.6 mm and the 379 at 2.1 mm. They are not interchangeable; the wrong height either rattles loose or prevents the case back from seating. Read the code off the old cell rather than measuring by eye, since half a millimeter is hard to judge.

Commonly used in

small ladies' watchesslim quartz movements

Need a replacement?

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⚠️ 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 317 the same as SR516SW?
Yes, they are the same cell: silver oxide, 1.55 V, 5.8 mm in diameter, 1.6 mm tall, around 10 mAh. 317 is the industry retail number used by Energizer, Renata and Murata; SR516SW is the IEC dimensional code printed alongside it.
Can a 379 replace a 317?
No. The 379 (SR521SW) shares the 5.8 mm diameter but is 2.1 mm tall against the 317's 1.6 mm, so the case back will not close properly. Watch batteries must match both dimensions; always replace a 317 with a 317.
How long does a 317 last in a watch?
Typically 18 months to 2 years in a small analog movement. Silver oxide holds its 1.55 V nearly to the end, so the watch keeps accurate time throughout and then stops fairly abruptly, unlike an alkaline cell that drifts as it fades.

More Silver-oxide watch (SR) cells

SR416SWSR512SWSR521SWSR527SWSR616SWSR621SWSR626SWSR716SWSR721SWSR726SW