Mastervolt Mac Plus 12/24-30 DC-DC Charger with CZone

The Mastervolt Mac Plus 12/24-30 converts a 12V source into 30A of 24V charging, with CZone and NMEA 2000 compatibility.

Analog voltage-sense connections are the detail that separates this from a simpler converter, and they compensate for cable loss. Sense wires read voltage at the battery rather than at the charger, so the output rises to account for the drop along the run. Without that, a long cable means the bank charges at less than the charger reports.

Temperature-optimized charging adjusts the profile as battery temperature changes, which matters most on lithium and AGM. The 3-step+ algorithm covers multiple chemistries including lithium, with engine-running detection protecting the starter battery from unwanted discharge.

The fanless high-frequency design runs quietly with efficient 12V to 24V conversion, and multiple units can be paralleled for higher output. CZone and NMEA 2000 compatibility integrates charging status into the boat's existing monitoring rather than leaving it isolated. Explore more DC-DC battery chargers.

• Voltage sense reads at the battery, not the charger
• Compensates for drop along a long cable run
• Otherwise the bank charges at less than reported
• 12V up to 24V at 30A, parallel-capable