Mastervolt Chargemaster Plus 24/20-3

Mastervolt ChargeMaster Plus 24/20-3 Integrated 24V Charging Solution

The Mastervolt ChargeMaster Plus 24/20-3 is a professional 24V battery charger designed for marine and mobile applications. This all-in-one solution combines multiple functions into one compact unit, reducing system complexity and eliminating the need for additional chargers.

Batterys Best Friend Technology & 3-Step+ Charging

Featuring Mastervolts intelligent architecture, the charger supports Gel, AGM, flooded and Lithium-ion batteries using the advanced IUoUo / 3-step+ charging method. The integrated pre-float function prevents overcharging of smaller batteries, allowing safe charging of multiple battery banks with different capacities.

A dedicated Lithium-ion charging profile is included, along with the flexibility to define a custom charging curve. Automatic temperature and DC voltage compensation ensure optimal performance in all conditions.

Worldwide Compatibility

With a wide AC input range of 80275V (120/240V nominal, 50/60 Hz), the ChargeMaster Plus operates reliably worldwide. It is designed to withstand voltage fluctuations and high ambient temperatures, making it ideal for demanding marine and mobile environments.

Advanced Communication & System Integration

Through MasterBus, CZone and NMEA communication interfaces, the charger integrates seamlessly into advanced onboard energy systems. It provides real-time monitoring of:

• AC power presence and quality
• Charging performance
• Battery voltage and temperature

Compatible with MasterShunt and system displays for professional energy management.

Reliable Performance for Marine & Mobile Use

A temperature-controlled variable-speed fan ensures low noise operation. Galvanic isolation, comprehensive protection features and multiple international certifications make it suitable for boats, yachts, RVs and 24V onboard systems.

Key Features

• 24V battery charger with 20A total output
• Up to 3 battery outputs
• Pre-float overcharge protection
• Automatic current distribution
• Optimized for Lithium-ion batteries
• Current Control via MasterBus or CZone
• Global AC voltage compatibility

Technical Specifications

The Mastervolt ChargeMaster Plus 24/20-3 delivers professional-grade 24V charging technology for reliable onboard energy management efficient, safe and fully system-integrated.