BACK-UP V625 Alkaline PX625 Mercury Equivalent A modern alkaline equivalent 482 for the popular mercury-based PX625 battery that is no longer being produced. Specifications Voltage 2731.5V327 Capacity 273 A modern alkaline equivalent for the popular mercury-based PX625 battery that is no longer being produced. Specifications Voltage 1.5 V Capacity 200m Ah Dimensions 15.5 x 6.2mm Weight 3.3g