Mastervolt ChargeMaster Plus 24V, 20A, 3-Bank Battery Charger

The ChargeMaster Plus 24/20-3 Battery Charger is the ultimate solution for marine and boating enthusiasts looking to ensure their batteries are always charged and ready. Designed with the demanding environment of the sea in mind, this charger offers reliable performance, advanced technology, and seamless integration with your boat's electrical system.

Key Features

• Compatible with all battery types, including Lithium-Ion
• 3-Step+ charging technology for rapid and complete charging
• Memory function safeguards against overcharging during power interruptions
• Handles battery banks up to 1000 Ah
• Easy installation with simple connections
• Capability to charge multiple battery banks simultaneously
• Integrated MasterBus system for centralized monitoring and control
• Reliable DC power supply to keep your onboard systems running

Advanced Charging Technology

The ChargeMaster Plus employs Mastervolt’s innovative 3-Step+ charging process, ensuring your batteries receive a fast and thorough charge. This technology not only charges your batteries quickly but also enhances their performance and longevity by effectively charging even deeply depleted batteries.

Seamless Connectivity with MasterBus

All ChargeMaster models can be effortlessly integrated into a MasterBus network using a single cable, except for the ChargeMaster 12/10, 12/15-2, and 24/6 models. This integration allows for centralized, local, or remote monitoring, configuration, and control of your entire charging system, providing you with complete oversight and management from one interface.

Intuitive Display and Controls

A clear LED display provides vital information at a glance, including charge current, voltage, charge phase, and battery condition as a percentage of available amp-hour capacity. Additionally, the display indicates MasterBus communication status. The user-friendly control panel features three buttons adjacent to the display, making it easy to operate the system efficiently.

Robust and Weather-Resistant Design

Built to withstand the harsh marine environment, the ChargeMaster Plus features solid metal-to-metal connectors with strain relief to prevent corrosion and overheating. Its durable construction ensures reliable performance even in the most challenging conditions at sea.

Charging Multiple Battery Banks

The ChargeMaster series is equipped with three equal charge outputs, allowing you to manage multiple battery banks effectively. Smaller models come with two meters of cable for a plug-and-play setup, while larger models offer one dedicated output for service batteries and two additional 10 A outputs ideal for starter batteries.

DC Power Supply for Onboard Accessories

Even when batteries are disconnected, the ChargeMaster delivers a constant DC output. This feature enables you to power essential onboard accessories such as lights and refrigerators, ensuring your vessel remains functional and comfortable.

Technical Specifications

Universal Voltage Compatibility

With auto-ranging capabilities, the ChargeMaster Plus adapts to various mains voltages (90-265 V AC, 50 or 60 Hz), ensuring optimal performance no matter where you are. This feature guarantees fully automatic operation globally, while the 3-Step+ charging process and cos phi 1-regulation maximize efficiency, even with limited generator capacity.

Additional Resources

Owner's Manual (PDF)

Orders of physical products placed by 3 PM EST M-F typically ships the same day, if all requested items are in stock. Weekend orders will typically ship on Monday.

Shipping takes 2-7 days.

We currently ship to the Contiguous 48 States.

Life of Sailing merch is custom made for the customer after an order is placed. Total turnaround is typically 7-14 days from order to doorstep.