Victron MultiPlus-II Pure Sine Wave Inverter/Charger

The Victron Energy MultiPlus-II 24/3000/70-32 Inverter/Charger is a multifunctional power conversion solution designed for off-grid solar systems, marine applications, mobile power installations, and compatible energy storage systems.

Combining a pure sine wave inverter, intelligent battery charger, and automatic AC transfer switch, the MultiPlus-II provides reliable power management from batteries, shore power, generators, or compatible grid connections.

Featuring Victron's PowerControl and PowerAssist technologies, the MultiPlus-II helps prevent overloaded AC sources while allowing battery power to supplement available input power during periods of increased demand.

This model is designed for 230V AC systems. It is not a direct replacement for a North American residential split-phase inverter.

Key Features and Benefits

• Pure Sine Wave Inverter: Delivers clean AC electricity for compatible electronics, appliances, and other electrical loads.
• Integrated Battery Charger: Charges connected batteries using compatible shore, generator, or utility AC power.
• Automatic Transfer Switch: Seamlessly transitions supported loads to battery-powered inverter operation when external AC power is interrupted.
• PowerControl Technology: Limits AC input demand to help prevent generator, shore power, or grid overload.
• PowerAssist Technology: Supplements limited incoming AC power with battery energy during periods of increased electrical demand.
• Dual AC Outputs: Separates essential loads from equipment that should operate only when an external AC source is available.
• Energy Storage System Integration: Supports compatible Victron ESS configurations with the required additional system components.
• Solar System Compatibility: Integrates with compatible MPPT solar charge controllers and AC-coupled solar inverters.
• Parallel and Three-Phase Capability: Supports expandable installations using appropriately configured compatible units.
• VE.Bus Communication: Enables configuration, system integration, and monitoring through compatible Victron devices.
• Remote Monitoring: Supports Victron Remote Management through a compatible GX device and internet connection.
• Programmable Relay: Provides configurable functions for alarms, battery conditions, and generator control.

Intelligent Inverter and Battery Charging

The Victron MultiPlus-II combines AC power conversion and battery charging in a single integrated unit.

When a compatible external AC source is available, the inverter/charger can supply connected loads while charging the battery bank. When external AC power is interrupted, the inverter automatically takes over supported loads using stored battery energy.

This makes the MultiPlus-II suitable for installations that require dependable power management, battery charging, and continuity of electricity during source interruptions.

PowerControl and PowerAssist Technology

Victron PowerControl helps manage limited AC input capacity by adjusting battery charging demand based on the power required by connected electrical loads.

When appliances require additional electricity, the inverter prioritizes the available AC supply and reduces charging demand to avoid overloading the source.

PowerAssist extends this functionality by supplementing insufficient incoming AC power with energy from the connected battery bank.

When demand decreases, the system can redirect available input power toward battery charging.

These features are particularly useful in generator-powered systems, marine shore power installations, and locations with limited electrical service capacity.

Automatic Backup Power and Dual AC Outputs

The MultiPlus-II features an integrated transfer switch that maintains power to supported loads when the primary AC source is disconnected.

Its main AC output is designed to continue supplying electricity through the inverter when sufficient battery energy is available.

The auxiliary AC output operates only when external AC input power is present. This allows nonessential appliances, such as water heaters or other discretionary loads, to remain disconnected during battery-only operation.

This arrangement helps preserve stored battery energy for essential electrical equipment.

Solar Energy Storage and Off-Grid Applications

The MultiPlus-II can serve as a central power conversion component in a compatible off grid solar system or battery-based energy storage installation.

When paired with an appropriate Victron MPPT solar charge controller, solar panels can charge the battery bank while the MultiPlus-II converts stored DC electricity into AC power.

The inverter/charger can also integrate with compatible AC-coupled solar equipment in supported configurations.

Solar panels cannot be connected directly to the MultiPlus-II PV input because this inverter/charger does not include an integrated solar charge controller. Solar charging requires appropriate additional equipment.

Expandable Power Systems

For installations requiring additional capacity, compatible MultiPlus-II units can be configured for parallel operation or supported three-phase systems.

System expansion requires matching equipment, appropriate configuration, and compliance with Victron's installation and system design requirements.

This flexibility makes the MultiPlus-II suitable for both individual installations and larger professionally designed power systems.

VE.Bus Communication and Remote Monitoring

The MultiPlus-II supports Victron VE.Bus communication for system configuration, control, and integration with compatible Victron monitoring equipment.

Supported accessories include Victron Cerbo GX, VE.Bus Smart Dongle, Digital Multi Control Panel, and MK3-USB interface.

When connected through a compatible GX device with internet access, the system can use the Victron Remote Management (VRM) Portal to display operating data, provide notifications, and support remote configuration.

Monitoring accessories and communication interfaces are separate components unless explicitly included in a bundle.

Applications

• Off grid solar systems with compatible battery storage
• Marine and yacht electrical systems
• Mobile and vehicle-based power installations
• Generator-supported battery systems
• Shore power management
• Compatible grid-connected energy storage systems
• Battery backup for essential electrical loads
• Expandable Victron power conversion systems

Product Specifications

Frequently Asked Questions