Keep your devices powered up with the Energizer A27 27A 12V GP27A battery. This single use alkaline battery offers reliable performance for your consumer electronics. Designed for use with devices that require A27 size batteries, this model from Energizer is an ideal choice for powering your electronics on the go. With a voltage of 12V, this battery provides the necessary power to keep your devices running for longer periods of time. The model number for this battery is 27A, and it is manufactured by Energizer, a trusted brand in the battery industry.