The best Victron products for RVs solve the problems RV owners actually have: weak campground pedestals, short generator runs, solar on the roof, and a battery gauge you can trust. This roundup picks one product per job, with the datasheet specs that matter for an RV, and notes where a 30A rig and a 50A rig need different gear.
Best Victron Products for RVs: Quick Picks
| Job | Pick | Why (datasheet) |
|---|---|---|
| Inverter-charger, 50A rig | MultiPlus-II 2x120V 12/3000 | 50A per leg pass-through, 2,400W continuous, 120A charger |
| Inverter-charger, 30A rig | MultiPlus-II 12/3000/120-50 | 2,400W continuous, 120A charger, under 20ms transfer |
| Solar controller | SmartSolar MPPT 100/50 | 700W nominal PV at 12V, Bluetooth |
| Battery monitor | SmartShunt 500A | ±0.4% current accuracy, under 1mA draw |
| Alternator charging (motorhomes) | Orion XS 12/12-50A | 50A, 98.5% efficiency |
| System brain | Cerbo GX MK2 + GX Touch 50 | One dashboard, VRM remote monitoring |
Inverter-Charger: MultiPlus-II 2x120V or 120V
For 50A rigs, the MultiPlus-II 2x120V passes both 120V legs through from shore or a generator, so 240V appliances still work on shore power. On battery, it inverts 120V only and ties both legs together. For 30A rigs, the standard MultiPlus-II 120V is simpler. Both have PowerAssist: set the pedestal limit, and the battery covers short peaks like a microwave plus a coffee maker.
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Buy: Victron MultiPlus-II 2×120 3000VA on Amazon
Solar: SmartSolar MPPT
A 100/50 handles 700W nominal on a 12V bank and up to 100V of panel voltage. Smaller roofs fit the 100/30 (440W nominal at 12V).
Buy: Victron SmartSolar MPPT 100/30 on Amazon
Battery Monitor: SmartShunt
The stock RV voltage gauge is nearly useless with lithium. The SmartShunt reads state of charge, amps and time remaining on your phone, and feeds the Cerbo GX.
Buy: Victron SmartShunt 500A on Amazon
Motorhomes: Orion XS
If you charge from the chassis alternator while driving, the Orion XS limits current (adjustable 1–50A) so you don’t overwork the alternator.
Cerbo GX MK2
It ties the MultiPlus, MPPT and shunt into one screen and lets you check the rig from home through VRM. It can also run generator auto start/stop.
See the MultiPlus-II 2x120V, SmartSolar 100/50, Orion XS and Cerbo GX on Victron’s website.
Worked Example: A 30A Travel Trailer Upgrade
A 30A trailer moving from lead-acid to 200Ah of lithium, with occasional boondocking:
- Inverter-charger: MultiPlus-II 12/3000/120-50, replacing the original converter and adding 120V outlets off-grid.
- Solar: 400W on a SmartSolar 100/30, within its 440W nominal at 12V.
- Monitoring: SmartShunt 500A.
- Optional: Cerbo GX and GX Touch 50 by the door.
With daily boondocking use of about 1,500Wh (fridge on propane or 12V, lights, water pump, TV and laptops, estimate), the 200Ah battery (2,560Wh) covers a day and a half, and 400W of solar replaces most of a day’s use in good sun.
Worked Example: A 50A Fifth Wheel
A 50A fifth wheel with a residential fridge and two roof air conditioners:
- Inverter-charger: MultiPlus-II 2x120V 12/3000, keeping both 50A legs on shore power and running 120V loads from the battery when off-grid.
- Battery: 400–600Ah of 12V lithium, in line with the MultiPlus-II 12/3000’s recommended battery range in Victron’s manual.
- Solar: 600–800W on two SmartSolar 100/50s, synchronised over VE.Smart Networking or a Cerbo GX.
- Monitoring and control: SmartShunt or Lynx Shunt VE.Can with a Cerbo GX MK2.
The residential fridge, averaging around 80W (estimate), uses about 1,900Wh a day, so a larger bank and solar array keep it running through longer off-grid stays.
Running an RV Air Conditioner From Battery
A typical 13,500 BTU roof unit may draw 1,200–1,500W running (estimate; soft starters reduce the start-up surge). On a single MultiPlus-II 12/3000 at 2,400W continuous, one unit fits. From a 400Ah 12V lithium bank (5,120Wh), running it for 3 hours uses roughly 4,000–5,000Wh with inverter losses (estimate), so plan battery and solar around how long you need cooling.
30A vs 50A at a Glance
| Rig | Inverter-charger | Shore pass-through | On battery |
|---|---|---|---|
| 30A | MultiPlus-II 120V | 120V, up to 50A switch | 120V |
| 50A | MultiPlus-II 2x120V | 120/240V, 50A per leg | 120V on both legs |
A Practical Upgrade Order for RVs
- Add a SmartShunt so you know your real daily use.
- Upgrade the battery to lithium, sized from that data.
- Replace the converter with a MultiPlus-II for charging and inverter power.
- Add roof solar and a SmartSolar controller.
- Add an Orion XS on motorhomes, and a Cerbo GX to tie it all together.
Generator Pairing
Set the MultiPlus-II’s AC input current limit to the generator’s continuous output. PowerControl reduces charging when loads rise, and PowerAssist covers short peaks from the battery, so even a 2,000–3,500W inverter generator can recharge the bank and run the RV at the same time.
Mounting Tips for RV Bays
Victron’s inverter-chargers and controllers should be mounted in a dry, ventilated compartment close to the battery, with clearance above and below for airflow. In many RVs, that’s the space the old converter or a basement storage bay used. Keeping the battery cables short reduces voltage drop and lets you use the cable sizes in each product’s manual.
FAQ
Can a MultiPlus-II run my RV air conditioner?
On shore power, yes. On battery, it depends on the AC’s running watts and your battery bank. PowerAssist helps on weak pedestals.
Do I need the Cerbo GX?
No, but it’s worth it once you have three or more Victron devices.
Will Victron gear work with my existing lithium battery?
Yes. You set the charge voltages to match. CAN communication depends on the battery model.
Can I keep my RV’s converter when adding a MultiPlus-II?
Many owners disable or remove the converter’s charging section, since the MultiPlus-II takes over charging; the DC fuse panel can usually stay.
Is a Cerbo GX useful in a 30A trailer?
It isn’t essential, but it brings every device onto one screen and adds remote monitoring through VRM.
Sources: Victron MultiPlus-II 2x120V, MultiPlus-II 120V, SmartSolar MPPT 100/30 & 100/50, SmartShunt and Orion XS datasheets, Cerbo GX product page (victronenergy.com, accessed Oct 2026); Why Not RV, “Victron Mobile Power Plant – Why Not RV: Ep 88”.
Related: EcoFlow Delta 3 Max RV Boondocking, EcoFlow Delta 3 Max RV Air Conditioner, LiTime 12V 50Ah LiFePO4 Battery Review, plus the Victron Energy Guide