Mastervolt ChargeMaster Plus 12/50-3 Charger

The Mastervolt ChargeMaster Plus 12/50-3 is a 12V 50A three-output charger with auto-ranging AC input and MasterBus connectivity.

Fifty amps is the high-output model in the 12V ChargeMaster Plus range, above the 35A version, and the choice between them follows bank capacity rather than budget. A charger should bring a bank back overnight without running at its limit for hours, and a large house bank on a 35A charger will still be charging at breakfast.

The 3-Step Plus process handles depleted banks rather than refusing them, and covers a broad chemistry range including lithium-ion. A memory function guards against overcharging when the AC supply is unstable, which matters on generator power or a marginal pedestal.

Three outputs maintain separate banks from one unit, and DC power-supply mode keeps onboard loads running with no batteries connected at all. Metal-to-metal connections with strain relief resist the corrosion and overheating that develop at terminals carrying 50 amps continuously. Explore more 3-bank battery chargers.

• 50A, the high-output 12V ChargeMaster Plus
• A large house bank on 35A is still charging at breakfast
• Handles depleted banks rather than refusing them
• Metal-to-metal terminals resist heat at 50 amps