CR123A
A 3 V single-use lithium cell built for high drain and long shelf life. Standard in security hardware and film cameras.
- Voltage
- 3 V
- Chemistry
- Lithium
- Size
- 17 × 34.5 mm
- Capacity
- 1400–1600 mAh
Specifications
| Type | Cylindrical |
|---|---|
| Chemistry | Lithium |
| Nominal voltage | 3 V |
| Diameter | 17 mm |
| Height | 34.5 mm |
| Typical capacity | 1400–1600 mAh |
| Rechargeable | No |
| Also sold as | CR17345, DL123A, EL123A, 123 |
Equivalent batteries
These codes describe the same physical cell as the CR123A.
Can I replace CR123A with…
Cells that fit the same space but differ in chemistry or voltage.
Li-ion, 16 × 34 mm. Different footprint — check the compartment before buying.
Runs at 3.6 V against the CR123A’s 3 V. That 0.6 V gap can damage a device built for the CR123A.
The 16340 is rechargeable and needs a charger matched to its chemistry.
Lithium, 15.6 × 27 mm. Different footprint — check the compartment before buying.
Lithium, 17 × 34.5 mm. Same footprint — it will physically fit.
Check before you swap. Batteries with similar dimensions are not always interchangeable with the CR123A. Always verify voltage, chemistry and the requirements printed in your device manual before fitting a replacement.
CR123A questions
What batteries are equivalent to the CR123A?
The CR123A is sold as CR17345, DL123A, EL123A. All of these describe the same 17 × 34.5 mm lithium cell at 3 V.
Can I use a 16340 instead of a CR123A?
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 CR123A last?
A CR123A holds a typical 1400–1600 mAh. Real runtime depends entirely on how much current your device draws and whether it is used continuously.
Is the CR123A rechargeable?
No. The CR123A is a single-use cell and should not be recharged.
Related batteries
Other cylindricals in the index.