CR123
The older designation for what is now sold as the CR123A. The same 17 × 34.5 mm 3 V lithium cell.
- Voltage
- 3 V
- Chemistry
- Lithium
- Size
- 17 × 34.5 mm
- Capacity
- 1300–1500 mAh
Specifications
| Type | Cylindrical |
|---|---|
| Chemistry | Lithium |
| Nominal voltage | 3 V |
| Diameter | 17 mm |
| Height | 34.5 mm |
| Typical capacity | 1300–1500 mAh |
| Rechargeable | No |
| Also sold as | CR17345, 123 |
Equivalent batteries
These codes describe the same physical cell as the CR123.
Can I replace CR123 with…
Cells that fit the same space but differ in chemistry or voltage.
Lithium, 15.6 × 27 mm. Different footprint — check the compartment before buying.
Check before you swap. Batteries with similar dimensions are not always interchangeable with the CR123. Always verify voltage, chemistry and the requirements printed in your device manual before fitting a replacement.
CR123 questions
What batteries are equivalent to the CR123?
The CR123 is sold as CR123A, CR17345. All of these describe the same 17 × 34.5 mm lithium cell at 3 V.
Can I use a CR2 instead of a CR123?
In many low-drain devices, yes — the sizes match. Check the voltage and chemistry against your device's requirement first, because a small voltage difference can matter in calibrated equipment.
How long does a CR123 last?
A CR123 holds a typical 1300–1500 mAh. Real runtime depends entirely on how much current your device draws and whether it is used continuously.
Is the CR123 rechargeable?
No. The CR123 is a single-use cell and should not be recharged.
Related batteries
Other cylindricals in the index.