The Victron MultiPlus-II 24/3000/70-50 2x120V is a professional 24V inverter/charger built for North American RV, marine, overland, mobile workspace, and off-grid power systems. It combines a powerful 3000VA inverter, a 70A battery charger, and a 50A transfer switch in one integrated Victron power platform.
This 2x120V model is especially useful for 50A RV-style electrical systems where 120V loads are split across two panel legs. In inverter mode, the MultiPlus-II provides 120V power to both L1 and L2 output legs, allowing 120V loads on either side of the panel to be powered from the battery bank. It does not create true 240V power from the battery; 240V loads are supplied only when the unit is connected to a proper split-phase 120/240V AC source.
With 2400W continuous output at 25°C and 5500W peak power, this inverter/charger can typically support one larger intermittent AC load plus everyday background loads such as lights, fans, chargers, networking equipment, entertainment devices, or a CPAP, depending on battery capacity, wiring, installation, appliance behavior, and other loads.
Product Role
The Victron MultiPlus-II 24/3000/70-50 2x120V helps provide inverter power, battery charging, and AC source management in a 24V mobile power system.
It can help support:
- 120V inverter power to both L1 and L2 sides of a 50A-style panel
- Battery charging from shore power or generator input
- Pass-through of 120/240V split-phase AC when a compatible AC source is connected
- Smarter use of limited shore or generator power with PowerControl and PowerAssist
- Victron monitoring, configuration, and remote system visibility with compatible GX devices
Why It Matters
Many 50A RVs and mobile electrical systems have 120V loads divided across two sides of the AC panel. A standard 120V inverter/charger may require additional design considerations to power both sides correctly. The MultiPlus-II 2x120V is designed for this type of North American AC layout, making it a strong choice for 24V systems that need cleaner integration with a split-panel environment.
When connected to shore power or a generator, the MultiPlus-II can pass AC power through to the loads while charging the battery bank. When that AC source is disconnected, it switches to inverter operation and continues powering connected 120V loads from the batteries. PowerControl and PowerAssist also help manage limited AC input so your system can make better use of campground, marina, generator, or other AC sources without overloading them.
Best For
- 24V RV, van, marine, overland, and off-grid power systems
- 50A RV-style panels with 120V loads on both L1 and L2
- Systems using shore power, generator input, or both
- Customers who want Victron inverter power and battery charging in one device
- Installations using Cerbo GX, Ekrano GX, VRM, or other Victron monitoring tools
- Mobile power systems where 240V loads should only operate from a proper AC source
Key Features
- 2x120V AC architecture: Provides 120V inverter power to both L1 and L2 output legs so 120V loads on either side of a compatible panel can be powered.
- 3000VA inverter capacity: Delivers strong inverter output for properly designed 24V mobile and off-grid systems.
- 2400W continuous output at 25°C: Supports practical AC loads when paired with the right battery bank, wiring, and installation.
- 5500W peak power: Helps handle short startup surges from compatible AC loads.
- 70A battery charger: Recharges a 24V battery bank from a compatible shore power or generator source.
- 50A transfer switch: Transfers AC loads between external AC input and inverter power when configured correctly.
- PowerControl and PowerAssist: Helps manage limited shore or generator input and can supplement short peak-demand periods from the battery bank on L1 input.
- VE.Bus communication: Supports configuration, monitoring, system integration, parallel operation, and three-phase operation with compatible system design.
System Integration
The MultiPlus-II 24/3000/70-50 2x120V connects your 24V battery bank, incoming AC source, and AC distribution system. It can invert battery power into 120V AC, charge the battery bank from shore power or generator input, and transfer loads automatically when AC input becomes available or disconnects.
In inverter mode, L1 and L2 outputs are connected together to provide 120V AC to loads on either output leg. When a split-phase 120/240V AC source is available, the output mirrors the AC input, allowing 240V loads to be supplied only from that external AC source. This helps prevent heavy 240V-only loads, such as certain water heaters or 240V air conditioners, from discharging the battery bank.
For monitoring and control, this unit can integrate with Victron GX devices such as Cerbo GX or Ekrano GX, as well as VRM remote monitoring when connected through a GX device. Configuration is handled through Victron software and compatible interfaces such as the MK3-USB.
