Victron MultiPlus 12V 3000VA Inverter-Charger
This MultiPlus combines a 12-volt battery inverter and an AC-powered battery charger in one enclosure. The purchased model belongs to the 3000VA inverter and 120A charger configuration.
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My Van AC Power: MultiPlus, Shore Power and Generator Equipment
The AC Equipment I Used
The AC equipment in my build includes a Victron MultiPlus 3000VA / 12V / 120A inverter charger, a Veepeak 30A shore-power inlet, a VictorsHome changeover switch and a Firman dual-fuel inverter generator.
Veepeak L5-30P Shore Power Inlet
This shore-power inlet presents an L5-30P twist-lock connection inside a covered housing. Its flange provides the mounting points around the inlet.
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VictorsHome LW28-63 Changeover Switch
This rotary cam switch has three selector positions and twelve wiring terminals. The purchased LW28-63 version uses a panel-mounted handle and stacked contact body.
View on AmazonBattery Power and External AC Are Different Modes
In inverter mode, the MultiPlus converts house-battery DC into AC. With an external AC supply, its charger function can replenish the batteries.
Reading the MultiPlus Label
On the listed MultiPlus, 3000VA is the inverter’s apparent-power rating, 12V identifies the DC model family, and 120A describes the battery-charger rating.
VA and watts are separate specifications: 3000VA does not automatically mean 3000W of continuous output. Likewise, the charger’s 120A rating is not a measurement of current entering the batteries at every moment.
Input and output currents also belong to their respective voltages and conversion stages. Keep each rating with the side of the equipment it describes.
The Shore Inlet and Changeover Hardware
The Veepeak 30A inlet provides the external AC connection. I also used a VictorsHome rotary changeover switch for source selection.
The Firman Generator
The Firman dual-fuel inverter generator in my equipment supplies external AC. The MultiPlus inverter supplies AC by converting stored battery energy.
Organizing AC Loads
For AC loads, record continuous operating power, short starting demands and which devices run together. Keep appliance-side measurements separate from battery-side readings so conversion losses are counted once.
Use the battery guide for stored-energy and runtime calculations, and the loads guide for the lights, stereo and camera equipment.
AC Equipment and Its Role
| Equipment | Role |
|---|---|
| Victron MultiPlus | Inverter and battery charger in one enclosure |
| Veepeak 30A shore-power inlet | External AC connection hardware |
| VictorsHome changeover switch | Rotary source-selection hardware |
| Firman dual-fuel inverter generator | External AC source |
Technical References
Related Electrical Guides
Battery storage
The two Lossigy 400Ah batteries I used, their storage role, and the charging and monitoring equipment around them.
Distribution and protection
The bus bars, switches, fuse holders, breakers, wiring and junction box I used.
Lights, stereo and cameras
The exterior work lights, light bar, stereo, cameras and video converter I used.