Batteries / A
A23
Alkaline zinc / manganese dioxide
Second-source check pending Primary batteryReviewed:
Reference dimensions are not universal manufacturing tolerances. Check the actual cell and holder.
The type status describes documentary checks of core specifications, not every fact or suitability for a device.
Understanding A23 before replacement
Documented battery characteristics
A23: Alkaline zinc / manganese dioxide, 12 V, Ø 10.3 × 28.5 mm. These are reference battery dimensions, not a verified device fit. Cell and battery pack shapes, contact layout and charging requirements can differ.
This is a primary battery; never attempt to recharge it.
Manufacturer markings in the dataset
MN21, 23A, V23GA
What to check before replacing A23
No device-specific fit or safe replacement is confirmed.
Technical specifications
| Designation | A23 Documented source [Energizer] |
|---|---|
| Chemistry | Alkaline zinc / manganese dioxide Documented source [Energizer] |
| Nominal voltage | 12 V Documented source [Energizer] [Duracell] |
| Diameter | 10.3 mm Documented source [Energizer] |
| Height | 28.5 mm Documented source [Energizer] |
| Rechargeable | No Documented source [Energizer] |
| Terminal form | Battery without external leads Documented source [Energizer] |
| Body form | Cylindrical cell Documented source [Energizer] |
Reference dimensions are not universal manufacturing tolerances. Check the actual cell and holder.
Other designations
These codes identify the same type family. Match the load variant, terminals and device requirements separately.
MN21Duracell [Duracell]23A[Duracell]V23GA[Duracell]
Documented brands
Brand presence comes from product documents or documented code mappings; current availability is not checked.
Product-specific observations
Capacity belongs to an individual product and test regime. It is not a universal value for this battery type.
Energizer A23Documented source
Current availability not checked [Energizer]
Documented product; no individual technical observations in this dataset.
Replacement limits
Device compatibility has not been verified. Dimensions alone do not prove that a battery fits or works.
Replacement evidence by category
Other markings of this technical type
MN21 · 23A · V23GA
These markings resolve to this type in documented sources. The exact variant and device requirements still matter.
Conditional replacement: review requirements
No conditional cross-type relation is recorded.
Known obstacles to direct replacement
No explicit obstacle is recorded here; that is not evidence of compatibility.
Other type pairs without a recorded assessment
This pair has not been assessed. No compatibility conclusion is available.
No automatic replacement recommendation. Device compatibility has not been verified. Dimensions alone do not prove that a battery fits or works.
Documentary limits
A23: Only one manufacturer or an insufficient independent source supports the cited measurements. Published technical records: Energizer 10.3 × 28.5 mm; Duracell MN21/23 (designation only). Device-level compatibility must be verified separately.
Sources & verification
- Energizer · v023-energizer-a23 Documented source
Energizer A23 technical datasheet
Current availability not checked
· Reviewed: - Duracell · v023-duracell-a23 Documented source
MN21/23 Alkaline Battery equivalent designations
Current availability not checked
· Reviewed:
Common questions
What size is A23?
Ø 10.3 × 28.5 mm
Can A23 be recharged?
No. Do not charge primary cells.
Can A23 replace another battery?
Not on the basis of size or matching names alone. Check the exact device requirements and the directed compatibility notes. This catalogue does not contain a guaranteed device-fit recommendation for A23.