Mastervolt ChargeMaster Plus 12/35-3 Battery Charger

The ChargeMaster Plus 12/35-3 is a versatile, globally adaptable battery charger designed for recreational and semi-professional applications. It delivers fast, complete charging for a wide range of battery chemistries, including Lithium-Ion, while preserving battery life through Mastervolt’s 3-Step+ charging process. Its auto-ranging input accommodates 90–265 V AC at 50/60 Hz, enabling reliable operation anywhere with a single power source.

Performance and versatility are realized through three equal charge outputs and a flexible control interface. The unit supports simultaneous charging of multiple battery banks, with a maximum battery-bank capacity of up to 1000 Ah. The 3-Step+ charging algorithm, combined with cos φ 1-regulation, optimizes charging efficiency and generator/generator-like capacity usage. A clear display reports charge current, charge voltage, charge phase, and battery content or condition as a percentage of available Ah, along with a MasterBus communication indicator.

• Three equal charge outputs for multi-bank charging
• Designed for Lithium-Ion as well as traditional lead-acid chemistries
• Memory function prevents overcharging when mains are unreliable
• Robust metal-to-metal connectors with strain relief for corrosion resistance and durability
• MasterBus-enabled with other Mastervolt products for central, local, or remote monitoring
• DC power supply capability allows system operation even when batteries are disconnected
• Plug-and-play installation with straightforward wiring
• Can charge multiple battery banks simultaneously

Safety is built in to ensure safe, complete charging, and the unit is designed for reliable operation in recreational and semi-professional contexts within integrated Mastervolt systems.

ChargeMaster Plus 12/35-3 Battery Charger

Make the most of your batteries with the ChargeMaster series, plugging in and charging anywhere in the world. Mastervolt’s ChargeMaster guarantees fast and complete charging of your batteries no matter where you are. Thanks to Mastervolt’s innovative 3-step+ charging process, batteries also perform better and last longer.

All ChargeMasters can be easily connected to a MasterBus network with only one cable and one connection (with the exception of the ChargeMaster 12/10, ChargeMaster 12/15-2, and ChargeMaster 24/6). What’s more, you have the option for central, local, or remote monitoring, configuration, and control of your system.

Clear Display

A clearly lit display on the ChargeMaster provides all essential information: charge current, charge voltage, charge phase, and battery content measurement and/or battery condition measurement as a percentage of available Ah capacity. The display also provides an indication of MasterBus communication. Three buttons adjacent to the read-out panel allow for easy operating of the entire system. 

The ChargeMaster is available in various models to guarantee you the ideal battery charger for any situation and demand.

Features:

• For recreational and semi-professional use.
• Suitable for any type of battery, including Lithium-Ion batteries.
• 3-Step+ charging technology for fast and complete charging also charges depleted batteries.
• Memory function prevents overcharging in case of unreliable mains.
• Safe and complete charging due to standard safety features.
• Charging capacity up to 1000 Ah battery banks.
• Easy to connect and quick to install.
• Can charge multiple battery banks simultaneously.
• Built-in system functionality (MasterBus) in combination with other Mastervolt products.
• Clear control panel (with the exception of the ChargeMaster 12/10, ChargeMaster 12/15-2, and ChargeMaster 24/6).
• Supplies your system without a battery.

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.

Robust Connections 

Solid metal-to-metal connectors equipped with strain relief prevent corrosion and overheating.

Charging multiple battery banks

The ChargeMaster series has three equal charge outputs. Those of the smaller ChargeMaster models are pre-installed with two meters 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.

DC Power Supply

Even if the batteries are not connected, Mastervolt ChargeMaster battery chargers can provide a constant DC output allowing you to turn on lights or keep the fridge cold.

Specifications:

• Nominal output voltage: 12V
• Total charge current: 35 A at 14.4 V
• Number of battery outlets: 3
• Charge current second output: 35 A
• Charge current third output: 35 A
• Battery bank size: 70-350 Ah
• Nominal input voltage: 120/230 V (90-265 V), 50/60 Hz
• AC connection: Connector strips
• Power supply mode: Yes
• Galvanic isolation: Yes
• Display/read-out: LED display

Specifications:

• Charger Input - Voltage: 120/230v
• Charger Output - Amps: 35a
• Charger Output Voltage: 12v
• Charging Banks: 3
• Portable: No
• Box Dimensions: 6"H x 12"W x 15"L WT: 9.2 lbs
• UPC: 816882022876