Battery

CR2025

3V lithium coin cell

CR2025 is a 3-volt lithium coin cell — 20 mm diameter and 2.5 mm thick. Thinner than CR2032; Polar H10 and similar devices name CR2025 specifically. Not a drop-in for CR2032 trays.

Chemistry: lithium
Voltage: 3 V
Diameter: 20 mm
Thickness: 2.5 mm
Used by: 18 devices

Common uses: Car remotes · Small electronics

CR2025 Diagram

Brand-neutral outline — confirm the tray in your device.

Other names

Genuine aliases and pack labels for this battery — not substitutes of a different chemistry.

DL2025 · ECR2025 · 2025

Related codes

Same battery / other names

CR20252025

Same battery

Same battery, different label.

CR2025DL2025

Also sold as

Brand or pack name for the same battery.

CR2025ECR2025

Also sold as

Brand or pack name for the same battery.

Commonly confused with

CR2025CR2016

Not a substitute

Same diameter family; different thickness — not interchangeable

CR2025CR2032

Not a substitute

Same diameter family; different thickness — not interchangeable

CR2025CR2050

Not a substitute

Same ~20 mm diameter family; different thickness — not interchangeable

Rechargeables are not equivalents

Rechargeable coin cells (LIR, ML, VL, CTL and similar) are not drop-in replacements for disposable CR cells — voltage and charging requirements differ. Same size does not mean the same battery.

Size family

Edge thickness in the 20 mm family — thicker bar means thicker cell. Not to scale. Highlighted cell is this page.

1.6 mm

2.5 mm

3.2 mm

5 mm

5 mm

Device-specific caveats

From manufacturer-backed notes on devices that use CR2025 — not generic advice.

Button/coin cells are a swallowing hazard — keep new and used cells away from children.
Re-pairing may be required after battery change on H10 firmware earlier than 3.3.1.
Re-pairing may be required after battery change on H9 firmware earlier than 1.2.1.

Devices using CR2025

All (18)Watches (9)Calculators (5)Cycling & fitness (2)Connected wearables (2)Casio (8)Texas Instruments (5)Polar (2)

Used in

Watches9 devices Calculators5 devices Cycling & fitness2 devices Connected wearables2 devices

Brands: Casio · Texas Instruments · Polar

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Learn more

Testers & chargers

Optional tools that fit this cell type — only where the chemistry allows. Separate from the battery answer.

Amazon links may earn us a commission. They do not change the battery answer.

Coin cell / button cell battery tester
Quick check of CR / LR / SR button and coin cells before fitting
Buy on Amazon More tools
ZTS Mini-MBT Multi-Battery Tester
More informative state-of-charge style checks across common formats
Docs Buy on Amazon More tools
Fluke 101 Digital Multimeter
Accurate open-circuit voltage and basic electrical checks
Docs Buy on Amazon More tools

Coin / button cell tester
Quick check for CR / LR / SR coin cells
Open-circuit voltage alone does not prove remaining capacity.
How to test a coin cell Buy on Amazon

Buy links are optional and separate from the battery answer.

Need one?

Need a CR2025?

Search Amazon for packs of this battery code.

Buy on Amazon Amazon UK

Buy links go to Amazon (Associates where tagged) or other affiliate programmes when available. They never change the battery answer.

Notes

Thinner than CR2032 — not interchangeable if the holder needs 3.2mm.