A27 battery
The A27 battery (also known as GP27A, MN27, L828, 27A, V27A, A27BP, G27A) is a dry cell-type battery used in some small remote controls and some cigarette lighters.

Description
An A27 battery is cylindrical, 27.8 mm long and 7.7 mm in diameter, with a typical weight of 4.4 grams, and a typical capacity around 20 mAh.  It has nominal voltage of 12 V.  It is similar to the A23 battery, with almost the same length and the same nominal voltage, but thinner and made of eight LR732 button cells.

See also
 List of battery sizes
 Battery (electricity)

References

Battery shapes