Mastervolt Mac Plus DC/DC Converter 12/12-50 CZone

Mac Plus 12/12-50

Give your service battery a boost

Too often, service batteries don’t receive the charge they need. This problem is worsened by smart alternators and start/stop systems, leading to slow and insufficient charging. The Mac Plus DC-DC charger solves this by charging your service battery quickly, safely, and consistently. And because it detects engine activity, the Mac Plus will never drain your starter battery.

Proven Mastervolt quality

Enjoy peace of mind knowing you have the best on board. With Mastervolt’s proven 3-step+ charging algorithm, the Mac Plus can charge quickly and efficiently—even from a fully discharged battery.

Its robust design handles even the toughest environments, with optimized battery temperature and a high-quality aluminum housing for superior protection against dust and water. The energy-efficient design enables silent, fanless operation.

Total power flexibility

The Mac Plus supports a wide DC input range, works with all DC sources, and can charge two batteries from a single alternator or charger. It supports all battery types—including lithium—and integrates seamlessly with modern alternators such as Euro 5 and 6, maintaining a stable charge even when the alternator is inactive.

Parallel configuration of up to ten units provides over 100 amps. Advanced high-frequency switching with modern microprocessors minimizes power loss when converting between 12V and 24V.

Analog voltage sensing ports are available to compensate for voltage drops and maintain proper charging.

Superior monitoring and control

Compatibility with CZone®, NMEA 2000®, and MasterBus ensures superior monitoring and integration into complete systems. Achieve optimal performance with multiple controllers and high-end MOSFETs. Configuration is easy via MasterAdjust, the CZone setup tool, or built-in DIP switches.

Features

• Fast and safe charging, even on short trips
• Fanless design for silent operation
• Compatible with flooded, gel, AGM, and lithium-ion (incl. LiFePO4) batteries
• Charges even completely discharged batteries
• Engine running detection protects starter battery
• Adjustable current limits for Euro 5/6 compliance
• Voltage stabilization protects sensitive electronics, lighting, and loads
• Parallel operation for over 100 A of charging capacity
• Compatible with MasterBus, CZone, and NMEA 2000 for smart system integration
• Temperature compensation and voltage sensing ensure optimal charging
• E-Mark/R10 certification for mobile applications
• Power supply mode ensures stable power for sensitive loads
• Heavy-duty terminals for easy installation and quick setup via DIP switches