Mastervolt Mac Plus 12/48-15 DC-DC Battery Charger, 15A

The Mastervolt Mac Plus 12/48-15 is a high-efficiency, bi-directional DC-DC battery charger designed to provide reliable, stable power for service batteries in vehicles and watercraft. Engineered to overcome charging inefficiencies caused by smart alternators and start/stop systems, this unit supports a wide range of battery chemistries, including Gel, AGM, and Lithium-Ion (LiFePO4).

Key Features:

• Output: 15A at 36/48V nominal voltage (adjustable range 30-60V DC).
• Input: 12V nominal (8-16V range).
• Bi-directional technology allowing versatile input/output configuration.
• Fanless, silent operation with high-quality aluminum housing for dust and water resistance (IP23).
• Engine run detection to prevent starter battery drainage.
• Parallel configuration support for up to four units to exceed 100A total capacity.
• Compatibility: MasterBus, CZone, and NMEA 2000 for advanced system integration and monitoring.
• Voltage stabilization protects connected equipment and sensitive loads.
• Compliance: CE, E-Mark, SAE J1171, ISO 8846 ignition protected, ABYC, and UKCA.
• Dimensions: 10.0" x 6.5" x 2.6" (255 x 165 x 66 mm).
• Weight: 4.4 lb (2 kg).

The Mac Plus features a robust 3-step+ charging algorithm and is designed for easy installation with heavy-duty connections and DIP switch configuration. It operates efficiently across an ambient temperature range of -25°C to 60°C, with power derating above 40°C.