Mastervolt Mac Plus 12/12-50 DC-DC Charger with CZone

The Mastervolt Mac Plus 12/12-50 delivers 50A of controlled 12V charging from a 12V source, with CZone and NMEA 2000 compatibility.

Start-stop systems and smart alternators are the specific problem this solves, and they are increasingly common on newer engines. Both vary or interrupt charging voltage in ways a directly connected service battery cannot use, leaving it chronically undercharged while the alternator appears to be working normally.

CZone and NMEA 2000 compatibility integrates the charger into the boat's existing network for monitoring rather than leaving it as an isolated black box. On a boat already running CZone, that means charging status appears alongside everything else rather than needing its own display.

Up to ten units can be configured in parallel where more output is needed, which is well beyond what most DC-DC chargers allow. The fanless aluminum design runs quietly with protection against dust and water, and the 3-step+ algorithm covers multiple chemistries including lithium with temperature-optimized charging and engine-running detection. Explore more DC-DC battery chargers.

• Built for smart alternators and start-stop systems
• Those leave a directly connected bank undercharged
• CZone and NMEA 2000 integration, not a black box
• Up to ten units in parallel