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Mastervolt ChargeMaster 12/15-2
Cat. No. MV-43011500
Weight 2.2 lbs

ChargeMaster 12/15-2
  • 3-Step+ charging technology for fast and complete charging.
  • Safe and complete charging due to standard safety features.
  • Memory function prevents overcharging in case of an unstable power supply.
  • Clear control panel.
  • Easy to install.
  • Built-in system functionality (MasterBus) in combination with other Mastervolt products (not available on ChargeMaster 12/10 and ChargeMaster 12/15-2).
Power you can rely on
Make the most of your batteries with the ChargeMaster, plugging in and charging anywhere in the world. Mastervoltís ChargeMaster guarantees fast and complete charging of your batteries no matter where you are. The ChargeMaster can charge multiple battery banks simultaneously thanks to its combined functionality. Moreover, all ChargeMasters can be easily connected to a MasterBus network with only one cable and one connection (not available on ChargeMaster 12/10 and ChargeMaster 12/15-2). You also have the option of central, local or remote monitoring, configuration and control of your system. The ChargeMaster is available in various models to guarantee you the ideal battery charger for any situation and demand.

Charging your batteries with every voltage
The Mastervolt ChargeMaster supplies a maximum capacity wherever you are via auto-ranging. Auto-ranging ensures perfect fully automatic operation anywhere in the world, regardless of the available mains voltage (90-265 V AC, 50 or 60 Hz). The 3-step+ charging technology guarantees fast and complete charging, while the cos phi 1 regulation gets the most out of limited generator capacity.

Sturdy connections
Metal-on-metal fitting gives a firm connection, and prevents corrosion or overheating of contact surfaces.

Charging multiple battery banks
The ChargeMaster series has three equal charge outputs. Those of the smaller ChargeMaster models are pre-installed with two metres of cable for a plug & play solution, while the heavier models have one full output (for example for your service battery) and two outputs of 10 A, ideal for your starter batteries.


General specifications

Nominal output voltage

12 V

Total charge current

15 A

Number of battery outlets


Charge current second output

15 A

Battery capacity range

30-150 Ah

Nominal input voltage

230 V (180-265 V), 50/60 Hz

AC connection


Supplies your system without battery




Dimensions, hxwxd

8,11 x 4,76 x 1,97 inches


2,20 pounds




CE, E-mark, ABYC A-31

Technical specifications

Charge characteristic

IUoUo, automatic 3-step+ for gel/AGM/wet/Lithium Ion

Charge voltage Bulk

14.25 V

Charge voltage Absorption

14.25 V

Absorption time

6 hours

Charge voltage Float (wet batteries)

13.25 V

Charge voltage Float (gel/AGM batteries)

13.8 V

Voltage compensation


Power consumption (DC side)

< 1 mA

Full load consumption (230 V AC)

250 W

Current Control function


Power factor control

> 0.95

Temperature range (ambient temp.) -25 °C to 60 °C, derating > 40 °C
-13 °F to 140 °F


vario fan

Sound level

< 52 dBA at 1 mtr

Protection degree



over temperature, over load, short circuit, high battery, low battery

vario fan

MasterBus compatible


CSI/DC alarm


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