• Brand: Battery Chargers
  • Product Code: AXB01357GPL
  • Availability: In Stock
  • Ex Tax: $810.00

Mastervolt ChargeMaster Plus 12/100-3 - Mastervolt 44311000 

With the new Battery’s Best Friend architecture, the 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.

Global Charging

The Mastervolt ChargeMaster Plus handles worldwide AC voltages and frequencies. Resisting large voltage fluctuations and high temperatures, it keeps working in harsh environments. For marine and mobile markets, ChargeMaster Plus is CE, E-mark, ABYC, UL, SAE, CEC and RCM/C-Tick compliant.

System Simplicity

Nowadays, equipment must be self-explaining. The ChargeMaster Plus 24/40 displays the charge phase of all three outputs in an understandable way. Robust and ergonomic connections save installation time. An integrated VSR eliminates the need for additional components and ensures that the alternators energy is funnelled through to the batteries.

Powerful Connections

In modern applications, all components work together. CAN-based MasterBus enables the charger to communicate with displays, shunts and power systems including communication standards like CZone, NMEA and CANopen. The ChargeMaster Plus can operate as a power supply for delicate communication equipment, or during the construction phase of a boat.


  • Revival mode: automatically revives even fully depleted batteries.
  • Multi voltage: charge 12V starter battery in a 24V system, without additional components.
  • Priority Charge: redirect available power to the lowest battery, for faster charging.
  • Smart Input: charge all three batteries from one single alternator for continuous charging on the go
  • Compact, easy to connect and quick to install.
  • Multicharger with two outputs, one in/output, DC-DC converter, current limiter and VSR.
  • Charges multiple batteries while being underway.

Technical Specifications

General specifications: Mastervolt ChargeMaster Plus 12/100-3, 44311000
Nominal output voltage (output 1 & 2)12V
Nominal output voltage (output 3)12V
Output current output 3 (current limited)5-40 A at 12V
Input current 'Smart Input'40 A at 12V
Max. AC current (230 V / 120 V)8.5 A / 17 A
Total charge current100 A at 14.4 V
Number of battery outlets2 + 1
Battery capacity range400-1000 Ah
Nominal input voltage120/230 V (80-275 V) 50/60 Hz
AC connectionscrew terminals, suitable up to up to 6 mm²
Power supply modeyes
Display/read-outLED display
Dimensions, hxwxd384 x 250 x 127 mm
15.1 x 9.8 x 5.0 inch
Weight5.9 kg
13.0 lb
ApprovalsCE, ABYC, UL1236, SAE J1171, CEC, RCM/C-Tick

Technical specifications: Mastervolt ChargeMaster Plus 12/100-3, Mastervolt 44311000
Charge characteristicIUoUo, automatic / 3-step+ for Gel/AGM/Lithium Ion/traction/spiral
Temperature compensation-30 mV/°C / -17 mV/°F; temperature sensor included
DC voltage compensationthrough MasterShunt
Power consumption (DC side)< 2 mA (MasterBus off)
Current Control functionyes, through MasterBus
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
Coolingvario fan
Protection degreeIP23, vertical mounting
Protectionsover-temperature, overload, short circuit, high/low battery voltage
MasterBus compatibleyes
Charger Status Interface (alarm contact)yes, using a Multipurpose Contact Output (product code 77030500)

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