Victron Energy MultiPlus-II - Power Inverter - 2X Pure Sine Wave Inverter Charger for 120 amp Battery - with PowerAssist Technology - 3000VA 12-Volt
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FREE refund/replacement until Jan 31, 2026 Learn more
This item's return window has been extended for the holiday season: FREE refund/replacement until Jan 31, 2026
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Availability:
In Stock.
Arrives
Nov 15 – Nov 16
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Size: 12V
Features
- POWER ASSIST: With the unique Power Assist feature the MultiPlus-II solar inverter will prevent overload of a limited AC source, such as a generator or shore power connection
- POWER WITHOUT INTERRUPTION: In the event of a grid failure, or when shore or generator power is disconnected, the Victron inverter is activated fast, within 20ms, and takes over the supply to the connected loads
- PARALLEL OPERATION: Up to 6 Victron Energy MultiPlus-II Pure Sine Wave Inverter units can operate in parallel to achieve higher power output, In addition to parallel connection, three units can be configured for three-phase output.
- PROFESSIONAL INVERTER CHARGER: The MultiPlus-II is ideally suited for professional marine, yachting, vehicle and land based off-grid applications
Brand: Victron Energy
Recommended Uses For Product: Home
Power Source: Battery Powered
Wattage: 3000 watts
Battery Capacity: 120
Product Dimensions: 11 x 6 x 23 inches
Item Weight: 53 pounds
Item model number: PMP122305102
Date First Available: May 5, 2021
Department: unisex-adult
Manufacturer: Victron Energy
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Nov 15 – Nov 16
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Size: 12V
This inverter/charger has got to be the best on the market. I just converted my class a to lifepo4 batteries and installed the Victron Multiplus II Charger/Inverter. Prior my inverter was a small 1800 watt and only powered the TV's and maybe an outlet. After installing this inverter and lifepo4 batteries, I can now operate most 120 volt appliances on batteries. Only thing I haven't tried yet is the AC unites. Amazing is about all I can say. Highly recommend this if you're looking to upgrade your RV electrical system.
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Reviewed in the United States on September 14, 2025 by jd2210ct
Size: 24V
6 months post-install and perfect. This is a fantastic upgrade to my older 24/3000/70 Multiplus. I run this on a 50A 43' diesel pusher RV and had the choice to go with a two inverter system (two legs) or do one. My old inverter used an AM Solar Smart Phase Selector which was used to bridge the AC out to both legs into the AC panel. When that SPS started to hiccup (mechanical switches) after five years, I went to this model. Solved and seamless. If it had it do over again, I might consider the 24/5000 version but we can do everything with this one and it was a great cost-effective solution that delivers plenty of power. If you doubt the value and functionality of Victron - don't. These systems make integrating other Victron devices seamless and safe.
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Reviewed in the United States on August 13, 2025 by Proost
Size: 12V
I like to boondock in my RV (camping at places without hookups) but I wanted to run my 110v appliances like the TV and microwave off my 12v batteries when shore power wasn't available. In previous RVs I've jury-rigged different products together to be able to do that, but I had to manually switch over to the inverter when off-grid and then remember to manually switch back when connected to shore power. Every time I would switch, the appliances would see a momentary loss of power and lose the time and any other settings they had. With the MultiPlus-II it's all automatic, so as long as the battery has some juice in it the appliances never see a loss of power. In addition, it does some neat tricks like PowerAssist, where if you're plugged in to a low power outlet (like a typical home 15A circuit) if the electrical demand is higher (like for a 20A air conditioner) it will supply the full 15A from the home circuit, then add whatever more power is required from the battery. All seamlessly automatic, from inside the RV you don't notice any change, things just work. I can also monitor what is going on using my cell phone, and can even make some small configuration change from it. A couple of improvements I would like see: the terminals for the 110v in and out are difficult-to-use push terminals, I would much rather have nut-and-bolt connections like they use for the 12v lines. It doesn't have bluetooth built-in, you have to buy an adaptor - for the price of this unit it should be built-in. Programming the unit requires a different adaptor and needs to be done from a laptop - I would prefer to be able to fully program it using a built-in bluetooth connection. Also, it makes an annoying buzz when in battery charge mode - I don't know why, I've had many battery chargers and none of them buzzed... That said, I'm very happy with the unit and would recommend it to anyone looking to upgrade their RV 50A system for boondocking.
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Reviewed in the United States on October 31, 2023 by Michael Parks Michael Parks
Size: 12V
I listened to the hype and I got the Victron Multi Plus II. I have a 50 amp RV, it refuses to work with my generator and cuts off my generator, it refuses to work with my AC unit, so I have had to bypass both. Now after 2 years of very little use, it shuts off and will not work. $300 dollar Harbor freight model works perfectly as a replacement, I will say excellent support, hence the 1 star. Otherwise it would be zero. Expensive POS.
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Reviewed in the United States on October 10, 2025 by Heath
Size: 12V
After a lot of research on solar solutions for an RV, Victron Energy is the stand-out solution. This unit is mounted in our 50amp RV and works in perfect unison with a Victron MPPT controller, Cerbo GX, and Linx distributer. We have 600w solar, 800ah LiFePo batteries, and everything works together to maximize charging. When shore power is disconnected, the inverter kicks on instantly with no loss of power. Only thing we had to change on the RV was for the 15000btu AC. The surge is normally so high it put the inverter into an overload fault. Adding a soft-start the the AC fixed the issue and we now have AC on battery power too.
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Reviewed in the United States on May 21, 2025 by Mozurry
Size: 12V
Awesome product..shipper sent me a 30 amp when I ordered a 50 amp?? Last 4 of product number told the tail.. warehouse person grabbed the wrong box.. sadly my solar project is on hold.. cost me time..no happy
Reviewed in the United States on August 4, 2025 by David McLendon
Size: 12V
Un equipo excelente con un deficiente empaque….no tienen en cuenta el peso del equipo en la parte superior que es donde se encuentra el transformador y por ende la mayor presión por el peso…..
Reviewed in the United States on July 22, 2025 by Morales Morales