Battery

CR123A

3V lithium cell

CR123 is a pack label for CR123A — same battery, different name on the package.

Chemistry: lithium
Voltage: 3 V
Diameter: 17 mm
Length: 34.5 mm
Used by: 9 devices

Common uses: Torches · Cameras · Security sensors · Film point-and-shoot cameras

CR123A 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.

CR123 · 123A · DL123A · EL123AP

Related codes

Same battery / other names

CR123A123A

Same battery

Same battery, different label.

CR123ACR123

Same battery

Same battery, different label.

CR123ADL123A

Also sold as

Brand or pack name for the same battery.

CR123AEL123AP

Same battery

Same battery, different label.

Commonly confused with

CR123ACR13N

Not a substitute

Different size family — CR1/3N is not CR123A

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

CR123A

34.5 mm

PX32

45.4 mm

Device-specific caveats

From manufacturer-backed notes on devices that use CR123A — not generic advice.

Keep lithium cells away from children.
Avoid 3.7V RCR123A rechargeables unless documentation for this body explicitly allows them — voltage differs from primary CR123A.
Do not use 3.7V RCR123A rechargeables as a drop-in — they can damage electronics designed for 3V primary cells.
Do not use rechargeable batteries (limited capacity) per August.

Devices using CR123A

All (9)Smart home sensors (6)point and shoot cameras (2)Smart locks (1)Ring (5)

Used in

Smart home sensors6 devices point and shoot cameras2 devices Smart locks1 device

Brands: Ring

Compare

CR123 vs CR123ACompare

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 CR123A?

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 cylinder. Used in many sensors and compact film cameras (Contax T2, Olympus Stylus Epic / mju II — Sprint 1B). Avoid 3.7V RCR123A rechargeables unless the device explicitly allows them. CR123 is the same cell family.