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Watch battery · silver oxide

SR512SW (335) battery

SR512SW = 335 = SB-AB. 5.81 × 1.25 mm1 silver oxide, 1.55 V1. Equivalents: V335, 622, 280-68, 9948, SR512 (8 codes in 7 code systems, full table); 10 calibres, modules and models in our base take it.

Sources checked · How we source numbers
SR512SW · 335: drawing to scaleSR512SW · 335: diameter 5.8 mm, height 1.25 mm.Ø 5.8−+1.25SR512SW · 335
SR512SW: face and edge view to scale, from the datasheet sizesDrawing from data, not a photo · mm
Diameter
5.8 mm1
Height
1.25 mm1
Nominal voltage
1.55 V1
IEC designation
SR5121

SR512SW equivalents

The same cell under 8 names. Any of them fits where 335 does.

Code systemSR512SWlow drain
IECSR5121
Energizer · Rayovac · Renata3351
VartaV3351
SeikoSB-AB1
Citizen280-681
Bulova6221
Omega99481

Size and chemistry

Diameter
5.8 mm1
Height
1.25 mm1
Nominal voltage
1.55 V1
Chemistry
Silver Oxide2
IEC designation
SR5121
1.253351.653172.153792.7319
Every 5.8 mm silver oxide size with a page, edge view to scale. Only the height tells them apart.
Show SR512SW at true size (1:1)
1:1 · not calibrated: sizes are approximate
SR512SW: drawing to scaleSR512SW: diameter 5.8 mm, height 1.25 mm.Ø 5.8−+1.25SR512SW
01020304050

Cell types in this size

SR512SW

Low drain (SW): for plain analog watches · Silver Oxide2

7 codes in our sources name this cell type.

LR512

Alkaline cell of the same size: the IEC digits are the size, the L is the chemistry. LR512 lands on this page by that rule; our sources hold no alkaline datasheet for it, so no figures are shown.

Capacity by manufacturer

Energizer 335SR512SW

6 mAh2cutoff 1.2 V as printedDatasheet ↗

Can I use another cell instead of 335?

Verdicts follow our swap rules from the datasheet size, voltage and cell type.

Check any other pair

  • Use instead of SR512SW

    LR512

    Fits, with a catch

    Fits, but LR512 is alkaline and runs shorter.

    Same 5.8 mm × 1.25 mm size. LR512 is an alkaline (L) cell; the watch is made for silver oxide (S). Use it to get the watch going, then fit SR512SW.

    Draw both cells in the swap checker

  • Use instead of SR512SW

    SR516SW

    No

    No: SR516SW is 0.4 mm taller than SR512SW.

    Same 5.8 mm diameter, but SR516SW stands 1.65 mm against 1.25 mm: the case back presses on it or does not close.

    SR516SW: 5.8 mm1 × 1.65 mm1, 1.55 V1

    Draw both cells in the swap checker

What uses 335

10 calibres, modules and models in our base name this size.

Seiko calibres10[3]

Seiko's battery chart gives 2 years of battery life for these calibres. Seiko, Pulsar, Lorus and Alba calibres share the chart.

  • 1E20
  • 1E50
  • 1E70
  • 2F50
  • 2F70
  • 2N20
  • 5A50
  • 5A54
All 10 calibres
  • 5A70
  • 5A74

Questions

What is the 335 battery equivalent?

SR512SW, V335, 622, 280-68, 9948, SB-AB, SR512 name the same 5.8 × 1.25 mm silver oxide cell as 335. Any maker's cell under one of these codes fits.

Is 317 the same as 335?

No. SR516SW is 0.4 mm taller than SR512SW. Same 5.8 mm diameter, but SR516SW stands 1.65 mm against 1.25 mm: the case back presses on it or does not close.

Is LR512 the same as SR512SW?

No: LR512 is an alkaline cell of the same size, SR512SW is silver oxide. Fits, but LR512 is alkaline and runs shorter. Same 5.8 mm × 1.25 mm size. LR512 is an alkaline (L) cell; the watch is made for silver oxide (S). Use it to get the watch going, then fit SR512SW.

What watches use the 335 battery?

In our base: 10 Seiko calibres (1E20, 1E50, 1E70, 2F50…). The full lists are on this page, with the brand tables they come from.

How long does a 335 battery last in a watch?

Seiko's battery chart gives 2 to 2 years for its 10 calibres on this cell, 2 years most often. Life depends on the calibre's current draw, not on the cell alone.

Seiko battery chart[3]

Sources

Documents checked · Report a wrong number

  1. 1Murata — Watch Battery Selection Guide / Cross Reference · pdf · read
  2. 2Energizer Holdings, Inc. — Product datasheet ENERGIZER 335 · pdf · read
  3. 3Seiko Watch Corporation (service information) — Value Checking List / Battery No. Cross-reference Chart · pdf · read