The Victron MultiPlus-II 48/10000/140-100 is a 10kVA combined inverter and charger for 48V battery banks, built for demanding off-grid, backup and hybrid solar installations. It delivers 230V AC output and pairs a pure sine wave inverter with a multi-stage charger and an automatic AC transfer switch in one unit.

Key features of this battery charger with inverter

• 10,000VA (10kVA) continuous inverter output at 230V AC.
• 140A battery charger for fast recharge from a generator or grid supply.
• 100A AC transfer switch for automatic changeover between grid, generator and inverter output.
• 48V DC input, compatible with lithium-ion (LiFePO4) and lead-acid battery banks.
• PowerControl and PowerAssist functions limit generator or grid load and draw extra power from the battery during peak demand.
• Parallel and three-phase configurations supported, with up to six units combinable for higher power or three-phase output.
• VE.Bus communication port for Victron GX devices, Venus OS and the VRM portal.
• Programmable relay and configurable charge algorithms through VEConfigure software.

Product overview

This is one of the largest single-phase units in the MultiPlus-II range, combining an inverter, charger and transfer switch for installations that need to carry substantial continuous loads: commercial premises, large off-grid properties or critical backup systems.

PowerAssist lets the unit supplement an undersized generator or a limited grid connection by drawing extra power from the battery bank when AC demand goes above the available supply, so a smaller generator can be used without load shedding. PowerControl does the opposite job: it caps the load drawn from the AC input to a set limit, protecting the source from overload.

Several MultiPlus-II units can run in parallel for extra output, or in a split three-phase arrangement for three-phase loads. Configuration and monitoring go through VEConfigure and the Victron VRM ecosystem via a compatible GX device. The 140A charger restores a large battery bank quickly, useful where generator run time needs to stay low.

Applications

• Large off-grid residential or rural properties with high continuous power demand.
• Commercial and light industrial backup systems needing fast transfer and high charger current.
• Hybrid solar installations with a 48V lithium or lead-acid battery bank and a solar charge controller.
• Generator-backed systems where PowerAssist reduces fuel use and generator sizing.
• Three-phase or high-capacity parallel systems built from multiple units.
• Telecoms and other critical sites needing reliable 230V AC output from a battery bank.

What's included

• 1 x Victron MultiPlus-II 48/10000/140-100 230V inverter charger unit.

Installation notes

At 48.6kg, this unit needs two people to handle and mount safely. Installation should be carried out by a qualified electrician familiar with battery systems.