Mastervolt ChargeMaster Plus 24/20-3 Battery Charger – Reliable 24V Power Supply for Marine and RV Applications

ChargeMaster Plus 24/20-3 Battery Charger

Make the most of your batteries with the ChargeMaster series, plugging in and charging anywhere in the world. Mastervolts ChargeMaster guarantees fast and complete charging of your batteries no matter where you are. Thanks to Mastervolts 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). Whats 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: 24 V
• Total charge current: 20 A at 28.8 V
• Number of battery outlets: 3
• Charge current second output: 20 A
• Charge current third output: 20 A
• Battery bank size: 40-200 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

The Mastervolt ChargeMaster Plus 24/20-3 Battery Charger is an advanced solution designed to optimize your battery performance in recreational and semi-professional environments. Built with the innovative 3-step+ charging technology, this charger ensures fast, complete, and efficient charging for a wide range of battery types, including Lithium-Ion batteries. Its auto-ranging capability allows seamless operation worldwide, accommodating mains voltages from 90 to 265 volts AC at 50 or 60 Hz, making it ideal for global travel or remote installations. The charger’s capacity to handle battery banks up to 200 Ah provides reliable power for critical systems such as lighting, refrigeration, and auxiliary devices, even when batteries are depleted or under demanding conditions. The robust design includes solid metal-to-metal connectors with strain relief, preventing corrosion and overheating, which guarantees long-term durability in harsh environments. The integrated system functionality via MasterBus allows easy connection with other Mastervolt products, enabling centralized monitoring and control for enhanced system management. The clear LED display presents essential information, including charge current, voltage, and battery health status, with intuitive controls for simple operation. The charger also features a built-in DC power supply function, providing continuous power to onboard electronics without the need for batteries, offering additional convenience and safety. Its multiple outputs and pre-installed cables facilitate quick installation and the ability to charge multiple battery banks simultaneously, making it suitable for complex systems requiring multiple power sources. Designed for ease of use, the Mastervolt ChargeMaster Plus 24/20-3 combines advanced technology with rugged construction to deliver reliable, safe, and efficient charging performance in a compact form factor. Whether you operate a boat, RV, or off-grid system, this charger provides a dependable power solution tailored to your needs, ensuring batteries are always ready when you need them most.

Features:

• Compatible with various battery types, including Lithium-Ion for versatile use

• 3-step+ charging technology for fast and complete charging, even from depleted states

• Auto-ranging operation supports mains voltages from 90 to 265 V AC, 50/60 Hz

• High capacity for charging battery banks up to 200 Ah

• Built-in system connectivity with MasterBus for centralized control and monitoring

• Robust metal-to-metal connectors with strain relief for durability and corrosion resistance

• Multiple outputs allow simultaneous charging of several batteries

• DC power supply feature enables operation without batteries for auxiliary power

• Clear LED display provides real-time charging parameters and system status

• Easy installation with quick-connect cables and straightforward setup