Mastervolt Mac Plus 12/12-50 + Czone is a premium DC-DC charger designed to keep your service battery charged quickly and safely, even on short trips. With a 12 V input and 50 A output, it powers modern electrical systems while protecting your starter battery from depletion.
-
Nominal input voltage: 12 V with a 10–16 V input range
-
Nominal output voltage: 12 V with a 10–15 V output range
-
Max output current: 50 A (up to 725 W)
-
Efficiency: >95% at nominal input with peak up to 97%
-
Battery chemistries supported: Flooded, Gel, AGM, and Li-Ion, including LiFePO4
-
Charge two batteries from one source: Capable of charging two batteries from a single alternator or charger
-
Engine run detection: Charging only occurs when the engine is running to protect the starter battery
-
Fanless design: Silent operation suitable for boats, caravans, and workshops
-
Charging algorithm: Mastervolt 3-step+ charge for quick, reliable charging from a flat battery
-
Parallel configuration: Up to ten units can operate in parallel for charging capacities well over 100 A
-
Power supply mode: Provides a stable, clean power source for sensitive loads
-
System integration: MasterBus, CZone, and NMEA 2000 compatibility for monitoring and automation
-
Voltage sensing and compensation: Analog voltage sense ports compensate for voltage drop; temperature compensation and sense optimization enhance reliability
-
Protection and stabilization: Voltage stabilization protects lights and loads; output ripple max 1% peak-peak; 2% stabilization across temperature and load variations
-
Construction and certifications: Aluminium housing for rugged reliability; E-Mark/R10 certification; Euro 5/6 compatible; heavy-duty connections; quick setup via DIP switches, MasterAdjust, or CZone tools
-
Sensor and monitoring readiness: Battery temperature sensor included; battery voltage sense enabled; engine run input supported (active high/low)
-
Status indicator: 3-color LED
The Mac Plus 12/12-50 + Czone is designed to keep your batteries at peak performance across diverse journeys. It delivers robust, quiet charging while integrating seamlessly with modern marine and mobile electrical networks, so you can rely on your electrical system when it matters most.
| Specifications battery charger |
| Battery temperature sensor |
yes, included |
| Battery voltage sense |
Yes |
| General specifications |
| Status indicator |
yes, 3-color LED |
| Communication protocol |
MasterBus, CZone & NMEA 2000 |
| Output voltage |
10-15 V |
| Nominal output voltage |
12 v |
| Output voltage stabilisation |
2 % at extremes of temperatures, load and input |
| Output voltage ripple (peak peak) |
max. 1 % |
| Max. output power |
725 W |
| Nominal output power |
675 W |
| Max. output current |
50 A |
| Output charge current (3-step mode) |
50 A |
| Nominal input voltage |
12 V |
| Input voltage range |
10-16 V |
| Max. input current |
50 A |
| Galvanic isolation |
no |
| Voltage limited |
yes |
| Efficiency |
> 95 % (at nom. input voltage, full load); peak 97 |
| Parallel configuration |
yes |
| Alarm contact |
yes, through MasterBus |
| MasterBus powering |
no |
| Engine run signal input |
yes (active high/active low) |
| DIP switches |
yes, for basic setup |
| Dimensions, hxwxd |
10.0 x 6.5 x 2.6 inch |
| Weight |
4.4 lb |
| Technical specifications |
| No-load consumption |
< 2 mA |
| Charge characteristic |
3-traps+ |
| Battery types |
flooded, Gel, AGM, spiral, Lithium Ion, traction, user defined |
| 3-Step charge option |
yes (DIP switch settings) |
| DC consumption |
< 5 mA |
| Connections |
3 x M8 terminal for cable diameters of 10-50 mm, (positive input, positive output, joint negative connection) 8-pole screw connection for cable diameters of 0.75-1.5 mm (remote on/off, temperature sensor, voltage measurement |
| Temperature range (ambient temp.) |
-25 °C to 60 °C; derating > 40 |
| Cooling |
natural cooling |
| Protection degree |
IP23 |
| Protections |
overload, over temperature, DC short circuit, reversed polarity (fuse) |
| MasterBus compatible |
yes |
