Victron Energy MultiPlus-II Inverter/Charger 12V 3000VA 120A 230V

The Victron Energy MultiPlus-II 12V/3000VA is the flagship inverter/charger for serious campervan and off-grid power systems — combining a 3000VA pure sine wave inverter, 120A battery charger, PowerAssist, PowerControl, and built-in anti-islanding in a single, professionally installed unit.

Benefits:

• 3000VA pure sine wave inverter — runs air conditioning, induction, power tools and all appliances

• 120A battery charger — fastest charging in the MultiPlus range

• AC transfer in under 20ms — true UPS function for computers and sensitive equipment

• PowerAssist — supplements limited shore/generator power with battery

• PowerControl — limits input draw to protect weak AC supplies

• External current transformer option for PowerControl/PowerAssist

• Built-in anti-islanding protection — safe for grid-connected solar systems

• Remote monitoring via Cerbo GX and free Victron VRM portal

Features:

The MultiPlus-II combines the best features of the MultiPlus and MultiGrid series — the ideal choice for the most demanding campervan, motorhome and off-grid builds. At 3000VA it handles split-system air conditioning, induction cooking, and heavy power tools. The 120A charger fills even a large 400Ah lithium battery bank quickly from shore power. The external current transformer option enables advanced PowerControl without needing the AC input cable routed through the unit. Anti-islanding protection makes it compliant for use in grid-tied solar installations in New Zealand and Australia. Configurable via VE.Bus with MK3-USB and VictronConnect, and integrates with Cerbo GX for full remote system monitoring via Victron's free VRM portal. Must be installed by a qualified electrical installer.

Also in our Victron range

For lower output, see the MultiPlus C 12/2000 (2000VA, 80A) or the MultiPlus 12/1600 (1600VA, 70A). Monitor your battery with a SmartShunt 500A. For solar charging, see the SmartSolar MPPT 100/50. For installation in Auckland or across New Zealand, see our campervan inverter installation service.

Frequently Asked Questions

What is the difference between the MultiPlus-II and the standard MultiPlus?

The MultiPlus-II offers higher output (3000VA vs 1600VA in the standard model), faster charging (120A), an external current transformer option for advanced PowerControl without rewiring the AC input, and built-in anti-islanding protection for grid-connected solar. It also incorporates features from the MultiGrid series. For most van builds, the MultiPlus 12/1600 or MultiPlus C 12/2000 are sufficient; choose the MultiPlus-II when you need 3000VA or the advanced features.

Can the MultiPlus-II run air conditioning in a campervan?

Yes — at 3000VA, the MultiPlus-II is capable of running a rooftop or portable air conditioning unit (typically 1000–2200W at startup surge). Pair with a 400Ah+ lithium battery bank for meaningful runtime off-grid. PowerAssist means even a limited shore power supply can support the AC unit with battery topping up the peak demand. For advice on sizing a complete system, contact our team at 205 Archers Road, Wairau Valley, Auckland via our installation service.

Does the MultiPlus-II require a licensed electrician to install in New Zealand?

Yes — the MultiPlus-II connects to 230V mains (shore power) and must be installed by a registered electrician in New Zealand, and to Australian Standards in Australia. Our Auckland workshop installs MultiPlus-II units as part of complete campervan and motorhome power systems. Contact us via our inverter installation service for a quote.