The 23A is a Alkaline battery of 10.0 mm × 28.3 mm rated 12V, with a capacity of mAh — related searches include 12V · MN21 · smoke detector.
It follows the IEC designations of its size class and is covered by our EU battery information portal declaration under Regulation (EU) 2023/1542.
For your device, match the exact size and voltage printed on the old cell — our engineers confirm the reference and can send samples.
