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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Availability:
Only 5 left in stock, order soon!
Arrives
Monday, May 18
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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, Corded Electric
Wattage: 3000 watts
Battery Capacity: 120
Power Source: Battery Powered, Corded Electric
Wattage: 3000 watts
Battery Capacity: 120
Number of Outlets: 2
Input Voltage: 240 Volts
Output Power: 2400 Watts
Standby Power Shutoff: 93%
Output Voltage: 120 Volts
Display Type: LED
Peak Output Power Watts: 4243
Electrical Output Waveform: Pure Sine Wave
Frequency: 50 Hz
Item Dimensions L x W x H: 6"L x 11"W x 23"H
Item Weight: 53 Pounds
Color: 3000VA
Brand: Victron Energy
Antenna Location: Home
Model Name: MultiPlus-II 2X 120V, 3000VA 12-Volt
Built-In Media: Victron Energy MultiPlus-II 2X 120V, 3000VA 12-Volt Pure Sine Wave Inverter and 120 amp Battery Charger, UL-Certified
Model Number: PMP122305102
Global Trade Identification Number: 37, 51
Mfr Part Number: PMP122305102
Item Type Name: Victron Energy MultiPlus-II 2X 120V, 3000VA 12-Volt Pure Sine Wave Inverter and 120 amp Battery Charger, UL-Certified
Warranty Description: Warranty
Manufacturer: Victron Energy
Energy Specifications Met: Met
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Monday, May 18
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
I upgraded to the Victron MultiPlus-II for my 50A RV solar setup, and it has completely transformed how I manage power while boondocking. This unit is a powerhouse, acting as a high-quality pure sine wave inverter, a sophisticated 120A battery charger, and a lightning-fast transfer switch all in one. The build quality is exceptional, featuring a heavy-duty steel enclosure that feels professional-grade and ready for the rigors of mobile life. The PowerAssist technology is a standout; it prevents my small 2000W generator from overloading by “assisting” it with battery power during high-demand moments, like when the AC kicks on. I also utilize the secondary AC output for non-essential loads, which automatically disconnects when I’m off-grid to preserve my battery bank. Monitoring everything through the VE.Bus system provides a level of data and control that is simply unmatched by budget competitors. Pros: • Incredible Reliability: The pure sine wave output is clean enough for my sensitive home theater equipment and medical devices. • Seamless Transfer: The 50A transfer switch is so fast that my desktop computer doesn’t even reboot when I disconnect from shore power. • Future-Proof: It is fully compatible with LiFePO4 batteries and can be expanded for parallel or three-phase systems if my power needs grow. Cons: • Learning Curve: The configuration requires the MK3-USB interface and a laptop; it’s not exactly “plug-and-play” for a novice, but there are plenty of online resources to help. • Weight and Size: At over 40 lbs, it requires a very secure mounting surface and takes up a fair amount of space in a storage bay. If you are serious about a robust, long-term power solution for a van, RV, or tiny home, this is worth every penny of the investment.
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Reviewed in the United States on January 17, 2026 by Michael Seers
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
Size: 12V
After my furrion mppt solar controller failed twice under warranty I decided to cut my losses. Installed Victron 3k multi plus inverter, Victron mppt solar controller, Victron energy cerbo gx and Victron gx touch 50 to power my fifth wheel via two 300ah Epoch lithium batteries and two 370 watt solar panels. . This set up is well worth the money and is working flawlessly. We now can run our trailer for hours without shore or generator power. Way cool. GO SOLAR!!
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Reviewed in the United States on February 21, 2025 by Cynthia Olson
Size: 12V
Yes, have been using Victron products for years..!!
Reviewed in the United States on April 3, 2026 by Charlie
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
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