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Watch battery · lithium coin

CR2430 battery

CR2430. 24.51 × 3 mm1 lithium coin, 3 V1. Equivalents: CR2425, DL2430 (3 codes in 3 code systems, full table); 4 calibres, modules and models in our base take it.

Sources checked · How we source numbers
CR2430: drawing to scaleCR2430: diameter 24.5 mm, height 3 mm.Ø 24.5−+3CR2430
CR2430: face and edge view to scale, from the datasheet sizesDrawing from data, not a photo · mm
Diameter
24.5 mm1
Height
3 mm1
Nominal voltage
3 V1
IEC designation
CR24251

CR2430 equivalents

The same cell under 3 names. Any of them fits where CR2430 does.

Code systemCR2430
IECCR24251 · CR2425 cell—
EnergizerCR24301
DuracellDL24302secondary source

Size and chemistry

Diameter
24.5 mm1
Height
3 mm1
Nominal voltage
3 V1
Chemistry
Lithium / Manganese Dioxide (Li/MnO2)1
IEC designation
CR24251
1.2CR24123CR2430
Every 24.5 mm lithium coin size with a page, edge view to scale. Only the height tells them apart.
Show CR2430 at true size (1:1)
1:1 · not calibrated: sizes are approximate
CR2430: drawing to scaleCR2430: diameter 24.5 mm, height 3 mm.Ø 24.5−+3CR2430
01020304050

What uses CR2430

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

Seiko calibres4[3]

Seiko's battery chart gives 3 years of battery life for these calibres. Seiko, Pulsar, Lorus and Alba calibres share the chart.

  • S140
  • S143
  • S141
  • S149

Cell types in this size

CR2430

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

2 codes in our sources name this cell type.

Capacity by manufacturer

Energizer CR2430CR2430

320 mAh1capacity to 2.0 V cut-offDatasheet ↗

Can I use another cell instead of CR2430?

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

Check any other pair

  • Use instead of CR2430

    CR2412

    No

    No: CR2412 is 1.8 mm thinner than CR2430.

    Same 24.5 mm diameter, but CR2412 is 1.2 mm against 3 mm: the contact spring may not reach it.

    CR2412: 24.5 mm4 Sources disagree: manufacturer 24.5 mm / secondary source 24 mm2 × 1.2 mm4, 3 V4

    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 CR2430 battery equivalent?

CR2425, DL2430 name the same 24.5 × 3 mm lithium coin cell as CR2430. Any maker's cell under one of these codes fits.

Is CR2412 the same as CR2430?

No. CR2412 is 1.8 mm thinner than CR2430. Same 24.5 mm diameter, but CR2412 is 1.2 mm against 3 mm: the contact spring may not reach it.

What watches use the CR2430 battery?

In our base: 4 Seiko calibres (S140, S143, S141, S149…). The full lists are on this page, with the brand tables they come from.

How long does a CR2430 battery last in a watch?

Seiko's battery chart gives 3 to 3 years for its 4 calibres on this cell, 3 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 CR2430 · 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. — CR2412 datasheet (EN) · pdf · read