This battery is Duracell's MN27 battery which has been designed to provide reliable and long lasting power, suitable for Car Remotes, Security Devices, and many other devices being used on an intermittent or continuous basis. It is part of Duracell's high voltage remote control batteries, uniquely built to offer excellent performance and longer operational life over a wide range of operating temperatures. Also known as - 27A, A27, L828, E27A, EL812
