Inverter/Charger Victron Energy MultiPlus 12/500/20-16 — 12V, 500VA inverter with 20A charger and 16A transfer switch

The Victron Energy MultiPlus 12/500/20-16 is a combined inverter and battery charger designed for 12 V systems. It delivers up to 500 VA of continuous inverter output while integrating a 20 A battery charger and a 16 A automatic transfer switch. The unit is intended for compact onboard and mobile installations such as caravans, boats, small off-grid setups or as a backup power source where reliable AC power and battery management are required.

Advantages

The MultiPlus combines inverter and charger functions in a single compact housing, reducing installation space and simplifying wiring. Its integrated 16 A transfer switch provides seamless and automatic transfer between inverter output and an external AC source, ensuring uninterrupted power to sensitive equipment. The built-in charger supplies a controlled 20 A charge current, supporting battery maintenance and longevity. Designed for continuous operation within its ratings, the unit offers dependable AC output and battery charging in small mobile and stationary systems.

Suitable for

• Caravans and motorhomes requiring compact AC power and battery charging
• Boat electrical systems for running appliances and charging service batteries
• Small off-grid or remote cabins with limited power consumption
• Backup power for sensitive electronics in compact installations

Key specifications

• Nominal DC voltage: 12 V
• Inverter continuous output: 500 VA
• Charger output current: 20 A
• Automatic transfer switch rating: 16 A
• Combined inverter/charger format for reduced installation footprint
• Designed for mobile and small stationary power applications

How to use

Install the MultiPlus according to manufacturer wiring and mounting recommendations, ensuring correct DC cable size and secure battery connections. Connect the AC input to an external shore supply or generator and route the AC output to the distribution circuit or critical loads. Configure charging settings and any VE.Configure or compatible monitoring settings if present to match battery type and desired charge profile. After installation, the unit will automatically switch between AC input and inverter output and charge the battery when AC is available.

Usage recommendations

Place the unit in a well-ventilated area, protect it from direct moisture and ensure adequate clearance for cooling. Use appropriately rated DC cables and fuses close to the battery to minimize voltage drop and improve safety. Match charger settings to the battery chemistry and capacity, and observe the inverter’s continuous and surge ratings when connecting appliances.