What is a CR2430 battery?

CR2430 is a 3-volt lithium coin cell about 24.5 mm across and 3.0 mm thick (ANSI 5011LC; packs may say DL2430 / ECR2430). Polar’s s3+ stride sensor names CR2430. Same diameter class as CR2450 and CR2477 but thinner — see CR2450 vs CR2430 vs CR2477. BR2430 is a different lithium subclass — not a pack label for CR2430. Not a drop-in for CR2450 or for smaller CR2032 trays.

What do the letters in CR2430 mean?

Under the IEC naming system, C is the assigned code for lithium–manganese dioxide — not taken from the spelling of those chemicals — and R means round (coin or button). The numbers encode size. Same diameter with a different first letter is a different battery. Full guide: CR vs LR vs SR.

What is CR2430 also called?

CR2430 pack labels and aliases on this site include DL2430, ECR2430, 5011LC, KCR2430, KECR2430, 2430, GPCR2430. These are names for the same battery entity — not chemistry substitutes.

Is CR2430 interchangeable with similar codes?

Related codes are not automatic equivalents. See CR2450 vs CR2430 vs CR2477 — match the code your device names.

What devices use a CR2430?

Examples on this site: Polar s3+ Stride Sensor. Always confirm on the device page.

Battery

CR2430

3V lithium coin cell

KCR2430 is a pack label for CR2430 — same battery, different name on the package.

Chemistry: lithium
Voltage: 3 V
Diameter: 24.5 mm
Thickness: 3 mm
Used by: 1 device

Common uses: Small electronics · Sensors · Remotes

Common questions

What is a CR2430 battery?: CR2430 is a 3-volt lithium coin cell about 24.5 mm across and 3.0 mm thick (ANSI 5011LC; packs may say DL2430 / ECR2430). Polar’s s3+ stride sensor names CR2430. Same diameter class as CR2450 and CR2477 but thinner — see CR2450 vs CR2430 vs CR2477. BR2430 is a different lithium subclass — not a pack label for CR2430. Not a drop-in for CR2450 or for smaller CR2032 trays.
What do the letters in CR2430 mean?: Under the IEC naming system, C is the assigned code for lithium–manganese dioxide — not taken from the spelling of those chemicals — and R means round (coin or button). The numbers encode size. Same diameter with a different first letter is a different battery. Full guide: CR vs LR vs SR.
What is CR2430 also called?: CR2430 pack labels and aliases on this site include DL2430, ECR2430, 5011LC, KCR2430, KECR2430, 2430, GPCR2430. These are names for the same battery entity — not chemistry substitutes.
Is CR2430 interchangeable with similar codes?: Related codes are not automatic equivalents. See CR2450 vs CR2430 vs CR2477 — match the code your device names.
What devices use a CR2430?: Examples on this site: Polar s3+ Stride Sensor. Always confirm on the device page.

Other names

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

DL2430 · ECR2430 · 5011LC · KCR2430 · KECR2430 · 2430 · GPCR2430

Related codes

Same battery / other names

CR24302430

Also sold as

Brand or pack name for the same battery.

CR24305011LC

Same battery

Same battery, different label.

CR2430KCR2430

Also sold as

Brand or pack name for the same battery.

CR2430KECR2430

Also sold as

Brand or pack name for the same battery.

CR2430GPCR2430

Also sold as

Brand or pack name for the same battery.

Commonly confused with

CR2430CR2450

Not a substitute

Same diameter; height differs

CR2430CR2477

Not a substitute

Same diameter class (~24.5 mm); height/capacity differ (3.0 vs 7.7 mm)

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 24.5 mm family — thicker bar means thicker cell. Not to scale. Highlighted cell is this page.

CR2430

3 mm

CR2450

5 mm

CR2477

7.7 mm

Device-specific caveats

From manufacturer-backed notes on devices that use CR2430 — not generic advice.

Keep coin cells away from children.
Sensor must be taught/paired to the Polar training computer after battery work if previously unpaired.

Devices using CR2430

Polar s3+ Stride SensorCycling & fitness · s3+ stride sensor · Featured

Used in

Cycling & fitness1 device

Compare

CR2450 vs CR2430 vs CR2477Compare

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 CR2430?

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

3V lithium coin 24.5×3.0 mm. Not CR2450 (thicker) or CR2032 (smaller diameter).