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Mastervolt 81205200 Mac Plus 24/12-50 Converter

MPN: 81205200

SKU: 0816882021381

Shipping Weight: lb

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Mastervolt Mac Plus 24/12-50 Converter 81205200 - Efficient Voltage Conversion

The Mastervolt Mac Plus 24/12-50 Converter is the solution to the common problem of slow charging and failing appliances in boats, service vans, campers, and trucks. This robust DC-DC charger guarantees the optimal condition of your service battery, ensuring that it is always fully charged and maximizing the lifetime of your battery.

The Mac Plus monitors the service battery and compensates for voltage loss caused by long cables, smart alternators, and regenerative braking. Its proven 3-step charge method ensures a quick and safe charge, while stabilizing the charge voltage protects your service battery and sensitive equipment.

The Mac Plus is suitable for flooded, Gel, AGM, and Li-Ion batteries (including LiFePO4) and charges even fully depleted batteries. Its fanless design ensures silent operation, and it has adjustable current limits to meet Euro 5/6 requirements. Other features include voltage stabilization to protect sensitive equipment, lights, and loads, engine run detection to protect the starter battery, and parallel operation to obtain charging capacities well over 100 Amps.


  • Fast and safe charging during short trips
  • Fanless design for silent operation
  • Suitable for flooded, Gel, AGM and Li-Ion batteries (incl. LiFePO4)
  • Charges even fully depleted batteries
  • Engine run detection protects starter battery
  • Adjustable current limits to meet Euro 5/6 requirements
  • Voltage stabilisation protects sensitive equipment, lights and loads
  • Parallel operation to obtain charging capacities well over 100 Amps
  • MasterBus for intelligent system monitoring and automation
  • Temperature compensation and voltage sense for an optimal charging result
  • E-mark certification for mobile applications
  • Power supply mode
  • Heavy duty connections for easy installation and quick set up via DIP switches


  • Boost charge voltage when service battery is located further from charging source or in systems with a smart alternator
  • When a stable power supply or different system voltage is needed

Euro 5/6 solution:

Charging service batteries in Euro 5/6 applications? The Mac Plus provides constant power to the service battery, even when the alternator is inactive.

Parallel operation:

The parallel configuration of several units will provide you over 100 amperes. Advanced high-frequency technology with modern microprocessors ensures minimum power loss when switching from 24 to 12 V and vice versa.

WarningWARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to .

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Product: Mastervolt 81205200 Mac Plus 24/12-50 Converter

Brand: Mastervolt

Model: 81205200

Shipping Weight: lb

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