27A Alkaline battery 12 Volt 

The 27A 12v battery is the equivalent of the Vinnic alkaline L828. 
The L battery number prefix often indicates an alkaline chemistry and is often used in remote controls, especially cigarette lighters.

Dimensions:- 28.0mm (H) x 7.7mm (dia)
Alternative Codes:- GP27A, Golden Power A27M, EL-812, Brinoca B-1, MN2, A27, L828, EL812, EL-812, CA22.