16340
The rechargeable counterpart to the CR123A, sold as RCR123A. Same footprint, higher voltage, and not always a safe swap.
- Voltage
- 3.6 V
- Chemistry
- Li-ion
- Size
- 16 × 34 mm
- Capacity
- 650–800 mAh
Specifications
| Type | Cylindrical |
|---|---|
| Chemistry | Li-ion |
| Nominal voltage | 3.6 V |
| Diameter | 16 mm |
| Height | 34 mm |
| Typical capacity | 650–800 mAh |
| Rechargeable | Yes |
| Also sold as | RCR123A, ICR16340, IMR16340 |
Equivalent batteries
These codes describe the same physical cell as the 16340.
Can I replace 16340 with…
Cells that fit the same space but differ in chemistry or voltage.
Lithium, 17 × 34.5 mm. Different footprint — check the compartment before buying.
Runs at 3 V against the 16340’s 3.6 V. That 0.6 V gap can damage a device built for the 16340.
The CR123A is single-use and must never be recharged.
Li-ion, 18 × 65 mm. Different footprint — check the compartment before buying.
Check before you swap. Batteries with similar dimensions are not always interchangeable with the 16340. Always verify voltage, chemistry and the requirements printed in your device manual before fitting a replacement.
16340 questions
What batteries are equivalent to the 16340?
The 16340 is sold as RCR123A, ICR16340. All of these describe the same 16 × 34 mm li-ion cell at 3.6 V.
Can I use a CR123A instead of a 16340?
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 16340 last?
A 16340 holds a typical 650–800 mAh. Real runtime depends entirely on how much current your device draws and whether it is used continuously.
Is the 16340 rechargeable?
Yes, the 16340 is a rechargeable cell and must be charged in a charger designed for its chemistry.
Related batteries
Other cylindricals in the index.