Mastervolt ChargeMasterPlus 12 Volts 75 Amps CZone 44310755

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Mastervolt ChargeMaster Plus 12V 75 Amps CZone 44310755

ChargeMaster Plus is the next generation of battery chargers that integrates multiple functions into one single device. Replacing auxiliary chargers, battery isolators and VSR, ChargeMaster Plus reduces system complexity and cost. Designed for versatility, it charges virtually any combination of two or three batteries in a fast and safe way and works anywhere in the world.

The new Battery’s Best Friend architecture, ChargeMaster Plus is capable of charging a multitude of battery chemistries, sizes and voltages. All batteries are charged with the fast and safe 3-step+ charge method. 



  • Smart Input: charge all three batteries from one single alternator for continuous charging on the go.
  • Priority Charge: redirect available power to the lowest battery, for faster charging.
  • Multi voltage: charge 12 V starter battery in a 24 V system, without additional components (for 24 V models only).
  • Revival mode: automatically revives even fully depleted batteries.



Part Number 44310755
Nominal output voltage 12 V
Max. output current primary output 75 A
Smart In-/Output output voltage 12 V
Smart In-/Output output current 5-40 A (adjustable)
Smart In-/Output input current max. 40 A
Total charge current 75 A at 14.4 V
Max. AC current (230 V / 120 V) 6.5 A / 13 A
Number of battery outlets 3 (max.)
Battery bank size 320-800 Ah
Nominal input voltage 120/230 V (80-275 V) 50/60 Hz
AC connection screw terminals, suitable up to up to 6 mm²
Power supply mode yes
Galvanic isolation yes
Display/read-out LED display
Dimensions, hxwxd 384 x 250 x 127 mm
15.1 x 9.8 x 5.0 inch
Weight 5.9 kg
13.0 lb
Compliance CE, ABYC, UL1236, SAE J1171, ISO 8846, CEC/DOE, RCM/C-Tick, RMRS, RRR


Technicl Information

Charge characteristic IUoUo, automatic / 3-step+ for Gel/AGM/flooded/Lithium Ion + user defined option
Temperature compensation -30 mV/°C / -17 mV/°F; temperature sensor included
DC voltage compensation through 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 80 °C, derating < 0 °C and > 40 °C
-13 °F to 176 °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 (code 77030500)