The Mastervolt ChargeMaster Plus battery charger is designed to provide both efficient and reliable performance in all conditions. This generation of battery charger offers multiple functions in one compact device. The ChargeMaster Plus reduces costs and simplifying the system and eliminating the need for additional battery chargers.

The 'Battery's Best Friend' architecture enables the ChargeMaster Plus to charge any battery chemistry using the fast and safe 3-step+ charging method. Different battery sizes can be combined, as the pre-float functionality eliminates the risk of overcharging smaller batteries. The charging profile of the Lithium Ion battery is included, as well as flexibility for a customised, user-defined profile.

Mastervolt 44320305 battery charger is the all-in-one solution for faster and safer charging

Global charging

The ChargeMaster Plus charges almost any combination of two or three batteries quickly and safely and can handle all possible mains voltages and frequencies worldwide.

Plug-and-play battery charger

The new ChargeMaster Plus models can achieve full functionality within a complete MasterBus or CZone system, or can also be used as a convenient plug-and-play standalone battery charger

Optimal performance

The new ChargeMaster Plus can communicate directly with Mastervolt Lithium Ion batteries, MasterShunt or system display for real-time adjustments and optimal performance.

The battery charger can withstand high temperatures and significant voltage fluctuations. That makes this battery charger very suitable for the most harsh, marine, or mobile environments.

Communication interfaces: MasterBus, CZone & NMEA2000

General specifications:

Nominal output voltage: 24V

Max. output current primary output: 30A

Total charge current: 30A at 28.5V

Max. AC current (230V / 120V): 4.2A / 8.6A

Number of battery outlets: 3 (max.)

Battery bank size: 120Ah - 240Ah

Nominal input voltage: 120/240V (80-275V) 50/60 Hz

Galvanic isolation: yes

Display/read-out: LED display

Technical specifications:

Charge characteristic: IUoUo, automatic / 3-step+ for Gel/AGM/flooded/Lithium Ion + user defined option

Temperature compensation: -60 mV/°C / -76 mV/°F; including temperature sensor

DC voltage compensation: Yes, via automatic compensation or MasterShunt

Power consumption (DC side): < 2 mA (MasterBus off)

Current Control function: yes, through MasterBus or CZone

Power factor control: >0.98

Temperature range (ambient temp.): -25°C to 70°C, derating >40°C, 80% power at 60°C (-13°F to 32°F)

Cooling: vario fan

Protection degree: IP23, vertical mounting

Protections: over-temperature, overload, short circuit, high/low battery voltage, ignition protection

Charger Status Interface (alarm contact): yes, using a Multipurpose Contact Output (77030500)

Key Features

Improved cooling technology for very low noise levels across the entire power range.

Use as a standalone charger or as part of a complete system.

Automatic power distribution, maximum charging current possible on each output.

All 3 outputs can provide maximum current - total charging current not to exceed the model's maximum.

Pre-float eliminates the risk of overcharging.

Automatic current distribution - charging current distribution based on the condition of the battery.

Compatible with worldwide frequencies & mains voltages.

Smaller & lighter than the previous model.