May 26, 2026

The IP67-rated models allow for installation in harsher environments 

Mastervolt, a global leader in innovative high-performance power solutions, has announced the latest addition to its Mac Plus range of power conversion solutions – waterproof 48V DC-DC chargers. These cutting-edge models, which provide a quick, safe, and consistent charge for both service and starter batteries, are designed for installation in unenclosed environments, ensuring reliable performance even when exposed to the elements. 
 
“Mastervolt is known for delivering premium solutions that enable self-sufficient power, and we are thrilled to introduce IP67-rated DC-DC chargers to the Mac Plus range,” said Ton De Winter, President, Power Solutions at Navico Group. “We recognize the challenges associated with charging service batteries in vehicles or vessels, such as voltage drops and insufficient charging. That’s why, two years ago, we introduced our Mac Plus models with bi-directional technology to address these issues head-on. Now, with the launch of our waterproof IP67-rated models, we’re delivering even more secure, reliable power. Already a popular choice among consumers for their bi-directional capabilities, these new models further expand the flexibility of Mastervolt power systems – empowering users with greater confidence and performance wherever they go.” 
 
Ideal for fishing boats, trailers, and similar applications, the IP67-rated Mac Plus incorporates a new touch-safe cover to protect connections and improve durability. With a sleek, contemporary finish, this new model’s robust aluminum housing further boosts resilience and reliability. Like other 48V models in the Mac Plus range, the waterproof version features bi-directional technology, ensuring both service and starter batteries receive the necessary power by using either side as an input or output, delivering a reliable and consistent charge. There is no risk of draining the starter battery when charging the house bank, as it automatically monitors whether the engine is running or providing charge. Additionally, the Mac Plus compensates for battery temperature to deliver optimal charging performance. Parallel operation of multiple units can provide charging capacities of over 100 Amps. 
 
The Mac Plus uses the proven Mastervolt 3-step+ charge algorithm, delivering a quick and easy charge, even to completely flat batteries. By stabilizing the charge voltage, the Mac Plus protects the service battery and other sensitive equipment, maintaining them in optimal working condition for years to come. Its power-efficient design allows the Mac Plus to operate without a fan, providing completely silent operation, making it an ideal choice for installations where noise could impact comfort and enjoyment. 
 
Equipped with CZone®, NMEA 2000®, and MasterBus communication, Mac Plus integrates easily into wider power systems, improves monitoring and control capabilities, and enables users to oversee and manage power functions from any connected display screen. On-board DIP switches and MasterAdjust, as well as the CZone configuration tool, ensure simple and intuitive set up. 
 
The new model offers total power flexibility to users. With a wide DC input range, it 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 flooded, Gel, AGM and lithium-ion batteries, including LiFePo4, and functions seamlessly with modern alternators, ensuring proper charging by providing constant power, even when the alternator is inactive. Additionally, the model features advanced modern microprocessors ensuring minimal power loss when switching from 48/36V to 12/24V and vice versa.  
 
Key Features 

              • IP67 waterproof design for exposed installations 

              • Bi-directional technology to charge two battery banks 

              • MasterBus, CZone and NMEA 2000 compatible, for intelligent system monitoring and control 

              • Parallel operation to obtain charging capacities over 100 Amps 

              • Temperature compensation and voltage sense for an optimal charging result 

              • Suitable for all battery chemistries, including Lithium 

              • Even charges fully depleted batteries 

              • Engine run detection protects starter battery 

The new 48V IP67 Mac Plus is available now in the following models: 

              • 48/12-50A 

              • 12/48-15A 

              • 48/24-30A 

              • 24/48-15A 

For more information about Mastervolt and its portfolio of power solutions, visit www.mastervolt.com.