Victron Energy MultiPlus-II Pure Sine Wave Inverter Charger | UL-Certified 12/3000/120-50 120V

Overview

The Victron Energy MultiPlus-II Pure Sine Wave Inverter Charger brings together inverter, charger, and grid-management functions in a single, UL-certified unit. Built to endure demanding environments, it suits off-grid cabins, boats, and mobile installations where stable power is essential.

With a true sine wave output, it delivers smooth power to sensitive electronics and appliances. The integrated charger helps keep batteries healthy and ready, while an optional external current transformer enables PowerControl and PowerAssist for smarter energy use and optimized self-consumption in hybrid setups.

Power management that adapts to your power source

The MultiPlus-II coordinates energy flow intelligently. PowerAssist provides a safeguard against overload on limited AC sources, such as a small generator or shore power, while PowerControl lets you tailor charging and usage to battery capacity and source limits.

Power without interruption

In events like grid failure or when shore/generator power is disconnected, the unit switches in within 20 milliseconds to maintain power to connected loads, helping to minimize disruption for critical devices and daily routines.

Expansion and flexibility

Designed for growth, you can connect multiple MultiPlus-II units in parallel to reach higher power levels. Up to six units in parallel support larger installations, and three units can be configured to deliver three-phase output.

Key advantages at a glance

• Pure sine wave output for reliable operation of sensitive gear
• Integrated charging to keep batteries properly topped up
• PowerAssist and PowerControl optimize use of limited AC sources
• Fast automatic transfer with minimal power interruption
• Parallel and three‑phase options scale with your needs
• UL-certified with broad country approvals for marine, vehicle, and off‑grid use

Recommended use cases

Ideal for off-grid cabins, sailing vessels, RVs and mobile homes, remote work sites, and backup power setups where dependable power management matters and the system can grow with your demand.

Technical notes

Model: 12/3000/120-50 120V. An external current transformer option (max 32A) enables precise PowerControl and PowerAssist with external sensing. Built-in anti-islanding and extensive approvals support operation in many regions.