Mastervolt 12v 25a Chargemaster Battery Charger

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Mastervolt Mastervolt 12v 25a Chargemaster Battery Charger

Item: M44010250

MPN: 44010250

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£437.10 £388.00



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Note: Currently not available for delivery to Norway.

Product Description

The Mastervolt ChargeMaster battery charger is designed to help batteries perform better and last longer, providing fast and complete charging wherever you are. The internal metal to metal connections are all equipped with strain relief to prevent damage from corrosion or overheating, ensuring long life and less chance of failure. Even without the batteries connected, the ChargeMaster can provide a reliable DC output to power lights or keep the fridge cold!

The 3-STEP+ charging memory ensures more power and a longer life for your batteries, and will even charge depleted batteries. The ChargeMaster is suitable for all types of battery, and also has a wide input voltage range, which ensures perfect automatic operation anywhere in the world. It also has a built in memory function, so batteries will not get overcharged even if the mains supply is unreliable. It is also MasterBus compatible, meaning they can be connected easily to a MasterBus system where you can operate and monitor all Mastervolt devices in one panel.General specifications:

Technical specifications:

  • Charge characteristic: IUoUo, automatic / 3-step+ for Gel/AGM/flooded/Lithium Ion + user defined option
  • Temperature compensation: -30 mV/°C / -38 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)


  • Nominal output voltage : 12 V
  • Total charge current: 25 A at 13.25 V
  • Number of battery outlets: 3
  • Charge current second output: 25 A
  • Charge current third output: 25 A
  • Battery bank size: 50-250 Ah
  • Nominal input voltage: 120/230 V (90-265 V), 50/60 Hz
  • AC connection: 2 metre AC cable
  • Power supply mode: yes
  • Galvanisedanic isolation: yes
  • Display/read-out: LED display
  • Fastening: 4x screw
  • Dimensions, hxwxd: 234 x 132 x 60mm (9.2 x 5.2 x 2.4 inch)
  • Weight: 1.8 kg (4.0 lb)
  • Compliance: CE, ABYC A-31, SAE J1171/ISO 8846 ignition protected, RRR, RMRS
  • Optional: Quick Connect (OEM) version with WAGO 770-113 connector and 25 cm cable, product code 44010252

Technical specifications:

  • Charge characteristic: IUoUo, automatic 3-step+ for Gel/AGM/wet/Lithium Ion
  • Charge voltage Bulk: 14.4 V
  • Charge voltage Absorption: 14.25 V
  • Absorption time: 4 hours
  • Charge voltage Float (wet batteries): 13.25 V
  • Charge voltage Float (Gel/AGM batteries): 13.8 V
  • Temperature compensation: yes
  • DC voltage compensation: automatic
  • Power consumption (DC side): < 2 mA
  • Full load consumption (230 V AC): 450 W
  • Current Control function: no
  • Power factor control: ≥ 0.98
  • Temperature range (ambient temp.): -25 °C to 60 °C, derating < 0 °C and > 40 °C (-13 °F to 140 °F)
  • Cooling: vario fan
  • Protection degree: IP23
  • Protections: over temperature, over load, short circuit, high/low battery voltage
  • MasterBus compatible: yes
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