Mastervolt Mac Plus Voltage Converter (48V - 12V DC / 50A)

The Mastervolt Mac Plus 48/12-50 is a DC-DC charger which is designed to provide quick and safe charge to the service battery, providing stabilised voltage to protect the battery and the equipment it powers.

Boost Your Service Battery - Too often, service batteries don't get the charge they need. This is a problem made worse by smart alternators and start/stop systems, which result in slow and insufficient charges. The Mac Plus 48V and 36V solve that problem. With brand new bi-directional technology, the Mac Plus can use each side as an input or output, delivering a reliable and consistent charge to both service and starter batteries.

Proven Mastervolt Quality - The Mac Plus uses the proven Mastervolt 3-step+ charge algorithm, delivering a quick and easy charge, even to completely flat batteries. By knowing when the engine is running and providing charge, you can also be sure that the Mac Plus will never drain your starter battery.
A robust design holds up in even the harshest conditions, with battery temperature optimized charging and high-quality aluminium housing to ensure superior protection against dust and water ingress. The power efficient design also allows the Mac Plus to operate silently and without a fan.

Total Power Flexibility - With a wide DC input range, the Mac Plus allows all DC sources and can charge two batteries from a single alternator or charger. It supports a full range of chemistries and battery types, including lithium. And it also functions seamlessly with modern alternators such as Euro 5 and 6, ensuring proper charging by providing constant power, even when the alternator is inactive.
Parallel configuration of up to ten units will provide over 100 amperes. And advanced high-frequency technology with modern microprocessors ensures minimal power loss when switching from 36/48V to 12/24V and vice versa.
Analog voltage sense ports are also available to compensate for voltage drop and maintain proper charging.

Superior Monitoring & Control
Compatibility with CZone, NMEA 2000 and MasterBus delivers truly superior monitoring and control, and ensures Mac Plus integrates easily into complete systems. Achieve the best performance possible via various controllers and high quality MOSFETs. And configure the Mac Plus with ease via MasterAdjust, the CZone configuration tool, or even via the on-board DIP switches.

General specifications
Status indicator: Yes, 3 colour double LED
Communication protocol: MasterBus, CZone & NMEA 2000
Output voltage: 10-15V DC
Nominal output voltage: 12V
Output voltage stabilisation: 2% at extremes of temps, load and input
Output voltage ripple (peak peak): max. 1%
Max. output power: 750W
Max. output current: 50A
Nominal input voltage: 36/48V DC
Input voltage range: 32-64V
Max. input current: 25A
Galvanic isolation: No
Efficiency: > 95% (at nom. input voltage, full load); 97% peak
Parallel configuration: Yes, up to 4
Alarm contact: Yes, through MasterBus, CZone, DIP Switch or remote switch
Engine run signal input: Yes (active high/active low)
DIP switches: Yes, for basic set up

Technical specifications
Battery types: Gel, AGM, Lithium Ion, user defined
Power consumption: < 5 mA, < 10 mA in CZone, < 1 mA in MasterBus
Cooling: Natural cooling
Protections: Overload, over-temperature, DC short circuit, reversed polarity (fuse)