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

Mac Plus 12/12-50 + CZone

Boost the Service Battery

Too often, service batteries dont 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 DC-DC charger solves this problem, providing a quick, safe, and consistent charge to the service battery. And, by knowing when the engine is running and providing charge, users can be sure that the Mac Plus will never drain a starter battery.

Proven Mastervolt Quality

Users get peace of mind knowing that they have the best on board. Using the proven Mastervolt 3-step+ charge algorithm, the Mac Plus delivers a quick and easy charge, even for completely flat batteries.

A robust design holds up in even the harshest conditions, with battery temperature-optimized charging and a high-quality aluminum 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 for 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. 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. Advanced high-frequency technology with modern microprocessors ensures minimal power loss when switching from 12V to 24V and vice versa.

Analog voltage sense ports are also available to compensate for voltage drops 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.

Features:

• Fast and safe charging, even during short trips
• Fanless design for silent operation
• Suitable for flooded, Gel, AGM, and Li-Ion batteries (incl. LiFePO4)
• Even charges fully depleted batteries
• Engine run detection protects the starter battery
• Adjustable current limits to meet Euro 5/6 requirements
• Voltage stabilization protects sensitive equipment, lights, and loads
• Parallel operation to obtain charging capacities well over 100 Amps
• MasterBus, CZone, and NMEA 2000 are compatible for intelligent system monitoring and automation
• Temperature compensation and voltage sense for an optimal charging result
• E-Mark/R10 certification for mobile applications
• Power supply mode offers stable power for sensitive loads
• Heavy-duty connections for easy installation and quick setup via DIP switches

Specifications:

• 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 Stabilization: 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, H x W x D: 255 x 165 x 66 mm (10.0 x 6.5 x 2.6 inch)
• Weight: 2 kg (4.4 lb)
• Compliance: CE, E-Mark, SAE J1171 ISO 8846 Ignition Protected

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 degrees C to 60 degrees C; derating > 40
• Cooling: Natural cooling
• Protection Degree: IP23
• Protections: Overload, over temperature, DC short circuit, reversed polarity (fuse)
• MasterBus Compatible: Yes

The Mastervolt Mac Plus 12/12-50 DC-DC charger is designed to efficiently boost service battery charging in demanding marine and mobile applications. Featuring the proven Mastervolt 3-step+ charge algorithm, it provides a quick, safe, and reliable charge even from deeply discharged batteries. Its robust aluminum housing and battery temperature-optimized charging ensure durability and optimal performance in harsh conditions. The fanless design guarantees silent operation, making it suitable for quiet environments where noise reduction is essential. This charger is compatible with various battery chemistries, including flooded, Gel, AGM, and Lithium-Ion (LiFePO4), and supports multiple battery setups simultaneously, enabling parallel configurations to achieve over 100 amps of charging capacity. Its wide input voltage range accommodates all DC sources, and advanced microprocessors minimize power loss across voltage conversions, ensuring maximum efficiency.

Seamless integration with modern vessel systems is facilitated through compatibility with CZone, NMEA 2000, and MasterBus platforms. These interfaces enable comprehensive monitoring and control, simplifying system management and ensuring optimal charging performance. The Mac Plus offers adjustable current limits for compliance with Euro 5/6 emission standards and features voltage stabilization to protect sensitive electronics, lights, and loads onboard. Additional features include battery voltage sensing, engine run detection to safeguard the starter battery, and temperature compensation for precise charging. Easy setup is supported via onboard DIP switches and the MasterAdjust configuration tool, while heavy-duty connections simplify installation. With certifications such as CE, E-Mark, and SAE J1171 ISO 8846, the Mac Plus is suitable for mobile applications requiring reliable, high-performance power management.

This versatile charger delivers up to 725 watts of power, handling high current output with efficiency above 95%. Its compact, weather-resistant design (IP23) ensures durability in various environments, and its intelligent features, including overload, over-temperature, and reverse polarity protections, maximize safety and longevity. Whether used to maintain auxiliary batteries or support complex power systems, the Mastervolt Mac Plus 12/12-50 provides an advanced solution for dependable and efficient battery management in marine, RV, or mobile systems.

Features:

• Fast and safe charging, even during short trips

• Fanless design for silent operation

• Suitable for flooded, Gel, AGM, and Li-Ion batteries (including LiFePO4)

• Capable of fully charging depleted batteries

• Engine run detection protects the starter battery

• Adjustable current limits to meet Euro 5/6 requirements

• Voltage stabilization safeguards sensitive equipment and loads

• Parallel operation supports over 100 amps charging capacity

• Compatible with MasterBus, CZone, and NMEA 2000 for system monitoring and automation

• Battery temperature compensation and voltage sense for optimal charging

• E-Mark/R10 certification for mobile applications

• Power supply mode provides stable power for sensitive loads

• Heavy-duty connections facilitate quick installation and setup via DIP switches