Mastervolt Mac Plus 12/48-15 Bi-Directional Marine Battery Charger and Power Supply

Mac Plus 12/48-15

Boost Your 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 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 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 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. 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 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:

• Bi-directional technology
• Get either 48V or 36V power from a single unit
• 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 compatible, with 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

General Specifications:

• Battery Voltage Sense: Yes
• Status indicator: Yes, 3 color double LED
• Communication protocol: MasterBus, CZone NMEA 2000
• Output voltage: 30-60 V DC
• Nominal output voltage: 36/48 V
• Output voltage stabilization: 2 % at extremes of temps, load, and input
• Output voltage ripple (peak-peak): Max. 1 %
• Max. output power: 900 W
• Max. output current: 15 A
• Nominal input voltage: 12 V DC
• Input voltage range: 8-16 V
• Max. input current: 60 A
• 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 setup
• Dimensions, hxwxd: 255x165x66 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, ABYC UKCA

Technical Specifications:

• Battery types: Gel, AGM, Lithium Ion, user-defined
• Power consumption: < 5 mA, < 10 mA in CZone, < 1 mA in MasterBus
• Temperature range (ambient temp.): - 25 C to 60 C; derating > 40 C/104 F
• Cooling: Natural cooling
• Protection degree: IP23
• Protections: Overload, over-temperature, DC short circuit, reversed polarity (fuse)

The Mastervolt Mac Plus 12/48-15 is an advanced, versatile battery charger designed for demanding marine applications. Featuring bi-directional technology, this unit can function as both a charger and a power source, providing reliable 36V or 48V power from a single device. Its innovative design ensures efficient and safe charging, even during short trips, by intelligently managing power flow between service and starter batteries. The robust aluminum housing and dust- and water-resistant construction guarantee durability in harsh maritime environments, while the fanless operation ensures silent performance. The Mac Plus uses Mastervolt's proven 3-step+ charge algorithm, enabling quick and complete charging of even deeply discharged batteries, including flooded, gel, AGM, and lithium chemistries such as LiFePO4. It also incorporates engine run detection to safeguard the starter battery from unnecessary drain, enhancing overall system reliability.

The device's flexible power management allows parallel operation of up to four units, delivering over 100 amps of charging capacity when combined. Its wide DC input range supports all modern alternators, including Euro 5 and 6 standards, ensuring compatibility with a broad spectrum of power sources. Advanced microprocessor technology minimizes power loss when switching between voltage ranges, maintaining system efficiency. Additional features include voltage stabilization to protect sensitive electronics, temperature compensation for optimal charging, and analog voltage sense ports that help compensate for voltage drops, maintaining proper charge levels. Compatibility with popular marine control systems like CZone, NMEA 2000, and MasterBus allows for seamless integration and sophisticated system monitoring, providing boaters with real-time data and automated control options.

Designed for ease of installation and operation, the Mac Plus offers configurable settings via DIP switches, MasterAdjust, or CZone configuration tools. Its high-quality connections facilitate quick setup, while the IP23 protection rating ensures reliable performance in challenging conditions. Certified with E-Mark, CE, SAE J1171, ISO 8846, and ABYC standards, this unit meets rigorous safety and environmental requirements for mobile and marine applications. Whether used as a standalone charger or integrated into a comprehensive power system, the Mastervolt Mac Plus 12/48-15 delivers efficient, flexible, and dependable power management for your marine vessel.

Features:

• Bi-directional technology allows use as both charger and power source

• Provides either 36V or 48V power from a single unit

• Fast and safe charging capability even during short trips

• Fanless, silent operation for unobtrusive use

• Compatible with flooded, gel, AGM, and lithium (including LiFePO4) batteries

• Ensures full charge even for depleted batteries

• Engine run detection protects the starter battery from drain

• Adjustable current limits to meet Euro 5/6 standards

• Voltage stabilization safeguards sensitive electronics and loads

• Parallel operation supports over 100 amps of charging capacity

• Compatible with CZone, NMEA 2000, and MasterBus for system integration

• Temperature compensation and voltage sense for optimized charging

• E-Mark/R10 certification for mobile applications

• Provides stable power supply mode for sensitive loads

• Heavy-duty connections and quick DIP switch setup for easy installation