---
product_id: 359821684
title: "MultiPlus-II - Power Inverter - 2X Pure Sine Wave Inverter Charger for 120 amp Battery - with PowerAssist Technology - 3000VA 12-Volt"
brand: "victron energy"
price: "VT437030"
currency: VUV
in_stock: true
reviews_count: 8
category: "Victron Energy"
url: https://www.desertcart.vu/products/359821684-multiplus-ii-power-inverter-2x-pure-sine-wave-inverter-charger
store_origin: VU
region: Vanuatu
---

# 3000VA pure sine wave power 20ms ultra-fast transfer switch 120A high-capacity battery charger MultiPlus-II - Power Inverter - 2X Pure Sine Wave Inverter Charger for 120 amp Battery - with PowerAssist Technology - 3000VA 12-Volt

**Brand:** victron energy
**Price:** VT437030
**Availability:** ✅ In Stock

## Summary

> ⚡ Power your freedom with seamless, smart energy mastery!

## Quick Answers

- **What is this?** MultiPlus-II - Power Inverter - 2X Pure Sine Wave Inverter Charger for 120 amp Battery - with PowerAssist Technology - 3000VA 12-Volt by victron energy
- **How much does it cost?** VT437030 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/359821684-multiplus-ii-power-inverter-2x-pure-sine-wave-inverter-charger)

## Best For

- victron energy enthusiasts

## Why This Product

- Trusted victron energy brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **PowerAssist Technology:** Prevent overloads on limited AC sources by intelligently supplementing with battery power during peak demand.
- • **Rapid Response Transfer:** Seamlessly switch power sources in just 20 milliseconds—your devices stay powered without interruption.
- • **Scalable & Flexible Setup:** Parallel up to 6 units or configure three-phase output to future-proof your off-grid or mobile power system.
- • **Unmatched Power Precision:** Deliver clean, stable 3000VA pure sine wave output for sensitive electronics and professional-grade reliability.
- • **Professional-Grade Durability:** Built tough for marine, RV, and off-grid use with a robust steel enclosure and UL certification.

## Overview

The Victron Energy MultiPlus-II is a 3000VA 12-volt pure sine wave inverter charger featuring a 120A battery charger and ultra-fast 20ms transfer switch. Equipped with PowerAssist technology, it prevents overloads on limited AC sources by supplementing power from the battery. Designed for professional marine, RV, and off-grid applications, it supports parallel operation for scalable power and delivers clean, uninterrupted energy with a rugged, UL-certified build.

## Description

Product description

Review: The Gold Standard for Off-Grid Power Management - 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.
Review: Ideal solution for 50A RV - 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.

## Features

- VICTRON ENERGY PURE SINE WAVE INVERTER: The MultiPlus-II inverter charger combines the functions of the MultiPlus and the MultiGrid. It has all the features of the MultiPlus, plus an external current transformer option to implement PowerControl and PowerAssist and to optimize self-consumption with external current sensing (max. 32A). It also has all the features of the MultiGrid with built-in anti-islanding and an increasingly long list of country approvals.
- 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

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0945M9NG4 |
| Antenna Location | Home |
| Battery Capacity | 120 |
| Best Sellers Rank | #147,996 in Automotive ( See Top 100 in Automotive ) #95 in Solar & Wind Power Inverters #235 in Power Inverters |
| Brand | Victron Energy |
| Built-In Media | Victron Energy MultiPlus-II 2X 120V, 3000VA 12-Volt Pure Sine Wave Inverter and 120 amp Battery Charger, UL-Certified |
| Color | 3000VA |
| Customer Reviews | 4.4 out of 5 stars 166 Reviews |
| Display Type | LED |
| Electrical Output Waveform | Pure Sine Wave |
| Energy Specifications Met | Met |
| Frequency | 50 Hz |
| Global Trade Identification Number | 08719076054337, 08719076058151 |
| Input Voltage | 240 Volts |
| Item Dimensions L x W x H | 6"L x 11"W x 23"H |
| Item Type Name | Victron Energy MultiPlus-II 2X 120V, 3000VA 12-Volt Pure Sine Wave Inverter and 120 amp Battery Charger, UL-Certified |
| Item Weight | 53 Pounds |
| Manufacturer | Victron Energy |
| Mfr Part Number | PMP122305102 |
| Model Name | MultiPlus-II 2X 120V, 3000VA 12-Volt |
| Model Number | PMP122305102 |
| Number of Outlets | 2 |
| Output Power | 2400 Watts |
| Output Voltage | 120 Volts |
| Peak Output Power Watts | 4243 |
| Power Source | Battery Powered, Corded Electric |
| Recommended Uses For Product | Home |
| Standby Power Shutoff | 93% |
| Warranty Description | Warranty |
| Wattage | 3000 watts |

## Product Details

- **Battery Capacity:** 120
- **Brand:** Victron Energy
- **Power Source:** Battery Powered, Corded Electric
- **Recommended Uses For Product:** Home
- **Wattage:** 3000 watts

## Images

![MultiPlus-II - Power Inverter - 2X Pure Sine Wave Inverter Charger for 120 amp Battery - with PowerAssist Technology - 3000VA 12-Volt - Image 1](https://m.media-amazon.com/images/I/61DYWnFIIkL.jpg)
![MultiPlus-II - Power Inverter - 2X Pure Sine Wave Inverter Charger for 120 amp Battery - with PowerAssist Technology - 3000VA 12-Volt - Image 2](https://m.media-amazon.com/images/I/615psjdUObL.jpg)
![MultiPlus-II - Power Inverter - 2X Pure Sine Wave Inverter Charger for 120 amp Battery - with PowerAssist Technology - 3000VA 12-Volt - Image 3](https://m.media-amazon.com/images/I/61pB3dmzZ0L.jpg)
![MultiPlus-II - Power Inverter - 2X Pure Sine Wave Inverter Charger for 120 amp Battery - with PowerAssist Technology - 3000VA 12-Volt - Image 4](https://m.media-amazon.com/images/I/61WtX1SSAGL.jpg)
![MultiPlus-II - Power Inverter - 2X Pure Sine Wave Inverter Charger for 120 amp Battery - with PowerAssist Technology - 3000VA 12-Volt - Image 5](https://m.media-amazon.com/images/I/61u1QKTr31L.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: Can this unit only use a 48v battery storage?**
A: Yes, the 48V model is for a 48V battery bank. There are other models available for either a 12V or 24V battery bank.

**Q: are you able to parallel 2of the units together, to double the output, or to have split phase of1@120v the other@120volts with a phase shift 240 volts**
A: Yes, you can do either. If you have 2 of these you can configure them to work together to output 240V split phase power to a load center or you can parallel them to double the power.

**Q: Is the 48v model for this listing for 120v? picture shows 230v model**
A: I wish I could change my previous answer for more clarity. Be very careful when purchasing from this manufacturer. They are in Europe. Their products start off as 230v single phase 50hz. So, 230v does not mean split phase, it means single phase 230v.  Like I said in the previous answer, if you require split phase, you need two of the 120v models configured for split phase.

**Q: it work 120v-110v?**
A: yes

## Customer Reviews

### ⭐⭐⭐⭐⭐ The Gold Standard for Off-Grid Power Management
*by M***S on January 17, 2026*

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.

### ⭐⭐⭐⭐⭐ Ideal solution for 50A RV
*by M***S on October 31, 2023*

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.

### ⭐⭐⭐⭐⭐ Very cool
*by C***N on February 21, 2025*

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!!

## Frequently Bought Together

- Victron Energy MultiPlus-II 2X Pure Sine Wave Inverter Charger for 120 amp Battery, 120V, 3000VA 12-Volt
- Victron Energy GX Touch 50 Display Screen - Waterproof 5-Inch Touchscreen for Cerbo GX for System Monitoring and Control - Easy Dashboard Mounting with Bolted Installation - HDMI Cable Included

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*Product available on Desertcart Vanuatu*
*Store origin: VU*
*Last updated: 2026-05-12*