Victron MultiPlus Review: Is It Worth It for a Van Build?
The Victron MultiPlus is the most specified inverter/charger in serious van builds. It combines an inverter, shore power charger, and automatic transfer switch in one box — and does all three functions very well. But it's not for everyone.
For context: inverter vs inverter/charger explained.
What the MultiPlus does
Inverter mode (off-grid): Converts 12V battery power to 120V AC for outlets and appliances. Pure sine wave output. Runs when not connected to shore power.
Charger mode (shore power): When plugged into a 30A campground outlet or household circuit, charges the house battery at its rated output (70A for the 12/1600/70). Simultaneously passes 120V through to your outlets (up to the shore power limit).
Automatic transfer switch: The MultiPlus monitors shore power. When shore connects, it switches the 120V outlets from inverter output to shore power in under 20 milliseconds — too fast for any sensitive device to notice. When shore disconnects, it switches back to inverter. Fully automatic, no manual intervention.
PowerAssist: When on shore power with a limited current source (a 15A household outlet, for example), the MultiPlus supplements the shore power with battery power to handle loads that would otherwise trip the breaker. Useful for friends' driveways and standard outlets.
Models for van builds
| Model | Inverter output | Shore charger | Shore input | Price |
|---|---|---|---|---|
| MultiPlus 12/1600/70 | 1,600W | 70A | 16A | ~$520 |
| MultiPlus 12/2000/80 | 2,000W | 80A | 16A | ~$650 |
| MultiPlus 12/3000/120 | 3,000W | 120A | 25A | ~$950 |
12/1600/70: The standard van build choice. 1,600W is enough for most loads; 70A charges 200Ah from 20% in about 2.5 hours on shore power. The 16A shore input works on both 15A and 20A household circuits (with PowerAssist managing the difference).
12/2000/80: Right if you cook on induction regularly or want a hair dryer without stress. The 400W extra inverter headroom makes a real difference for high-draw appliances.
How it installs
The MultiPlus has four connections:
- DC in/out: 12V battery (positive through a large fuse/breaker, negative to bus bar)
- AC input (shore): 120V AC from shore power inlet
- AC output: 120V AC to your outlets/panel
- VE.Bus: Communication connector for VictronConnect via MK3-USB adapter or Color Control GX
Configuration via the VictronConnect app (using an MK3-USB adapter, ~$50, or via Bluetooth on newer firmware). Set battery type, charge voltage, shore current limit. Once configured, it runs automatically.
VictronConnect integration
The MultiPlus works with VictronConnect and Victron's VE.Bus protocol. With a Cerbo GX or VenusOS device (Raspberry Pi), you get a full dashboard showing inverter output, shore charger state, battery voltage, and all charging sources in one view. For serious builds, this visibility is valuable.
Limitations
Price: $500–$650 for the MultiPlus vs $150–$200 for a standalone Renogy inverter. If you rarely use shore power, it's hard to justify.
Size: The MultiPlus is physically large — plan space carefully in a tight build.
Shore input limit: The 12/1600 and 12/2000 are rated for 16A shore input (standard for 15A/20A circuits). On a 30A campground hookup, the MultiPlus doesn't use the full 30A for charging — you'd need a separate shore charger (or the MultiPlus Compact or MultiPlus II) to take advantage of the full 30A.
Verdict
The Victron MultiPlus 12/1600 or 12/2000 is the right choice for van builds that use shore power regularly and want seamless, automatic switching between off-grid and on-grid. For builds that rarely plug in, a standalone inverter plus the occasional Victron Blue Smart charger is a better value.