A23
A 12 V stack of eight tiny alkaline cells in one shell. High voltage, very low capacity.
- Voltage
- 12 V
- Chemistry
- Alkaline
- Size
- 10.3 × 28.5 mm
- Capacity
- 40–55 mAh
Specifications
| Type | Alkaline Battery |
|---|---|
| Chemistry | Alkaline |
| Nominal voltage | 12 V |
| Diameter | 10.3 mm |
| Height | 28.5 mm |
| Typical capacity | 40–55 mAh |
| Rechargeable | No |
| Also sold as | 23A, MN21, V23GA, 8LR932 |
Equivalent batteries
These codes describe the same physical cell as the A23.
Can I replace A23 with…
Cells that fit the same space but differ in chemistry or voltage.
Alkaline, 8 × 28.2 mm. Different footprint — check the compartment before buying.
Check before you swap. Batteries with similar dimensions are not always interchangeable with the A23. Always verify voltage, chemistry and the requirements printed in your device manual before fitting a replacement.
A23 questions
What batteries are equivalent to the A23?
The A23 is sold as 23A, MN21, V23GA. All of these describe the same 10.3 × 28.5 mm alkaline cell at 12 V.
Can I use a A27 instead of a A23?
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 A23 last?
A A23 holds a typical 40–55 mAh. Real runtime depends entirely on how much current your device draws and whether it is used continuously.
Is the A23 rechargeable?
No. The A23 is a single-use cell and should not be recharged.
Related batteries
Other alkaline batterys in the index.