battery-backed

(без степеней сравнения)Of a device, using a battery to maintain operation when not powered by the main electrical supply (e.g. during a blackout).

batteriegepuffert

(без степеней сравнения)Using a battery to maintain volatile memory when powered off.

(без степеней сравнения)Of saved game data, written to a volatile memory chip in a video game cartridge to maintain the data when not in use.