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Watch battery · lithium coin

CR2012 battery

CR2012 = SB-T15. 201 × 1.2 mm1 lithium coin, 3 V1. Equivalents: 280-207 (3 codes in 3 code systems, full table); 7 calibres, modules and models in our base take it.

Sources checked · How we source numbers
CR2012: drawing to scaleCR2012: diameter 20 mm, height 1.2 mm.Ø 20−+1.2CR2012
CR2012: face and edge view to scale, from the datasheet sizesDrawing from data, not a photo · mm
Diameter
20 mm1
Height
1.2 mm1
Nominal voltage
3 V1
IEC designation
not listed

CR2012 equivalents

The same cell under 3 names. Any of them fits where CR2012 does.

Code systemCR2012
EnergizerCR20121
SeikoSB-T152secondary source
Citizen280-2072secondary source

Size and chemistry

Diameter
20 mm1
Height
1.2 mm1
Nominal voltage
3 V1
Chemistry
Lithium / Manganese Dioxide (Li/MnO2)1
IEC designation
not listed
1.2CR20121.6CR20162.5CR20253.2CR2032
Every 20 mm lithium coin size with a page, edge view to scale. Only the height tells them apart.
Show CR2012 at true size (1:1)
1:1 · not calibrated: sizes are approximate
CR2012: drawing to scaleCR2012: diameter 20 mm, height 1.2 mm.Ø 20−+1.2CR2012
01020304050

What uses CR2012

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

Seiko calibres7[3]

Seiko's battery chart gives 2–10 years of battery life for these calibres. Seiko, Pulsar, Lorus and Alba calibres share the chart.

  • 5G23
  • 7G21
  • 7K32
  • 7K36
  • W570
  • W571
  • W720

Cell types in this size

CR2012

Primary cell · Lithium / Manganese Dioxide (Li/MnO2)1

3 codes in our sources name this cell type.

Capacity by manufacturer

Energizer CR2012CR2012

58 mAh1capacity to 2.0 V cut-offDatasheet ↗

Can I use another cell instead of CR2012?

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

Check any other pair

  • Use instead of CR2012

    CR2016

    No

    No: CR2016 is 0.4 mm taller than CR2012.

    Same 20 mm diameter, but CR2016 stands 1.6 mm against 1.2 mm: the case back presses on it or does not close.

    CR2016: 20 mm4 × 1.6 mm4, 3 V5

    Draw both cells in the swap checker

Warnings from the makers

Keep away from children

“KEEP OUT OF REACH OF CHILDREN. Swallowing may lead to”[1]
“serious injury or death in as little as 2 hours due to chemical burns and”[1]

Questions

What is the CR2012 battery equivalent?

280-207, SB-T15 name the same 20 × 1.2 mm lithium coin cell as CR2012. Any maker's cell under one of these codes fits.

Is CR2016 the same as CR2012?

No. CR2016 is 0.4 mm taller than CR2012. Same 20 mm diameter, but CR2016 stands 1.6 mm against 1.2 mm: the case back presses on it or does not close.

What watches use the CR2012 battery?

In our base: 7 Seiko calibres (5G23, 7G21, 7K32, 7K36…). The full lists are on this page, with the brand tables they come from.

How long does a CR2012 battery last in a watch?

Seiko's battery chart gives 2 to 10 years for its 7 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. 1Energizer Holdings, Inc. — Product datasheet ENERGIZER CR2012 · pdf · read
  2. 2WatchBattery (UK) Ltd — Watch Battery Cross Reference Table (rows re-extracted from HTML this session) · html · read
  3. 3Seiko Watch Corporation (service information) — Value Checking List / Battery No. Cross-reference Chart · pdf · read
  4. 4Panasonic Energy Co., Ltd. — CR2016 datasheet (EN) · pdf · read
  5. 5Energizer Holdings, Inc. — Product datasheet ENERGIZER CR2016 · pdf · read