Renogy 100W 12V Monocrystalline Foldable Solar Suitcase Renogy 100W 12V Monocrystalline Foldable Solar Suitcase Price range: $228.95 through $307.95
victron|SKU:1593053

Victron MultiPlus-II 12/3000: 3000VA Split-Phase Inverter/Charger with 120A Charging

Hybrid Inverter/Charger with Split-Phase 120/240V Output

3000VA continuous output — Powers 120/240V split-phase loads reliably
120A integrated charger — Fast battery charging from shore or generator
Sub-20ms transfer time — UPS function seamless during grid failures
PowerAssist technology — Boosts limited AC sources with battery power
  • FREE System Design Consultation -- Our engineers size your system for your actual consumption
  • FREE Shipping -- Ships free, including LTL freight on large orders
  • Compatibility Guarantee -- Pre-vetted to work together in your system architecture

$877.95

Out of stock

In the box

  • Victron MultiPlus-II 12/3000 inverter/charger unit
Victron | MultiPlus-II 12/3000 | 12V Input | 3000VA Output 120/240V | 120A Charger | Transfer Switch
Victron MultiPlus-II 12/3000: 3000VA Split-Phase Inverter/Charger with 120A Charging
$877.95

Hybrid Inverter/Charger with Split-Phase 120/240V Output

The Victron MultiPlus-II 12/3000 delivers 3000VA of continuous power at 120/240V split-phase, making it a field-tested workhorse for off-grid and backup power systems. Its built-in 120A charger and automatic transfer switch mean seamless transitions when grid power drops — under 20 milliseconds. PowerAssist prevents generator or shore power overload by supplementing from your battery bank. This unit is solar-ready for integration with MPPT charge controllers and grid-independent when paired with the right battery bank. Monitor and control remotely from any device.

FREE SHIPPING30-DAY RETURNSEXPERT SUPPORTFREE SHIPPING30-DAY RETURNSEXPERT SUPPORTFREE SHIPPING30-DAY RETURNSEXPERT SUPPORTFREE SHIPPING30-DAY RETURNSEXPERT SUPPORTFREE SHIPPING30-DAY RETURNSEXPERT SUPPORTFREE SHIPPING30-DAY RETURNSEXPERT SUPPORT
3000VA / 120/240V
<20ms UPS Transfer
120A Battery Charger
PowerAssist Technology
3000VA
Continuous Output
120A
Battery Charging
120/240V
Split-Phase AC
No More Blackouts When the Grid Drops

No More Blackouts When the Grid Drops

Grid-tied systems sold as "energy independence" go dark the moment the utility fails. That defeats the entire point. The MultiPlus-II eliminates this with sub-20ms automatic transfer — your lights, fridge, and well pump never flicker. At Off Grid Vault, we pre-vet every inverter for real off-grid performance, not just grid-tied bill reduction. This unit integrates with MPPT solar chargers and battery banks as a complete, grid-independent power architecture. No mix-and-match guesswork, no components that refuse to communicate. Every system we spec works together — because we already did the engineering.

PowerAssist Prevents Generator Overload

PowerAssist Prevents Generator Overload

When your AC source — generator or shore power — hits its limit, the MultiPlus-II steps in automatically. First, it reduces battery charging current to free up capacity. If that is not enough, it draws from your battery bank to boost the incoming supply. Your loads keep running without tripping breakers or stalling equipment. This off-grid proven technology means a smaller, quieter generator can handle peak loads like well pumps and compressor startups. Combine it with external current sensing for precise PowerControl, and you optimize every watt your system produces.

Remote Monitoring from Any Device

Remote Monitoring from Any Device

The MultiPlus-II supports full remote monitoring and control through Victron's ecosystem. Access your system status, adjust settings, and view real-time data from a phone, tablet, laptop, or PC across multiple operating systems. Whether you are at the cabin, at work, or traveling, you see exactly what your inverter is doing — input voltage, output load, battery state of charge, and charger status. Built-in anti-islanding and an expanding list of country approvals mean this unit meets compliance requirements for legitimate off-grid and backup installations, not experimental setups.

System Compatibility

Verify these conditions before integrating into your power system.

  • 12V DC battery bank configured and connected
  • Split-phase 120/240V AC wiring present at panel
  • Compatible MPPT controller or PV inverter available for energy storage integration

Where This Unit Performs

Designed for setups that demand reliable hybrid inverter/charger performance.

Off-Grid Homestead Power
Emergency Backup Systems
Cabins & Tiny Homes

Full specifications

At a glance

Dimensions
See product page
Power
120/240V
Warranty
See product page
Full specifications13 data points across 4 categories

Dimensions

Physical DimensionsSee product page
WeightSee product page

Power & Performance

DC Input12V
Output3000VA
AC Output Voltage120/240V
Battery Charger120A
UPS Transfer Time<20 milliseconds
PowerAssistYes — prevents overload of limited AC source
Remote MonitoringPhone, tablet, laptop, or PC

Materials

HousingSee product page

Compliance & Warranty

Anti-IslandingBuilt-in
Country ApprovalsSee product page
WarrantySee product page

The Off Grid Vault Promise

Every product we carry is vetted for real-world performance. This is what we stand behind.

Authorized Victron DealerWarranty claims handled directly through us — no ticket queues, no runaround.
30-Day Performance GuaranteeIf it doesn't perform as specified, we make it right. Uninstalled returns accepted within 30 days in original packaging.
Free Shipping & System DesignShips free on all orders. Need help sizing your system? Our engineers provide free consultation before you buy.
★★★★★
“I've been running the MultiPlus-II for six months on my 12V LiFePO4 bank with four 100W panels. The PowerAssist feature is exactly what I needed — my 3500W generator was tripping on well pump surges before, and now it handles everything cleanly. Transfer time is instant; my freezer never even blinked during the last outage. Victron quality lives up to the reputation.”
F
First L.Prescott, AZ

The MultiPlus-II 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. It also features built-in anti-islanding and an increasingly long list of country approvals.

Features
Unique PowerAssist – Prevents overload of a limited AC source.
First, battery charging automatically reduces.
Second, shore side supply will be boosted with power taken from the battery.
Split-Phase Output
120/240v AC Output
Energy Storage System
Combine with MPPT Solar Chargers or Grid-tie PV Inverters.
UPS Function
Automatically takes over in the event of a grid failure in less than 20milliseconds.
Remote Monitoring and Control
Access can be from a phone, tablet, laptop, or PC for multiple operating systems.

Victron | MultiPlus-II 12/3000 | 12V Input | 3000VA Output 120/240V | 120A Charger | Transfer Switch Specifications

Freight Shipping

For in stock products, standard processing times are 2 – 5 business days. Estimated delivery times are based on carrier availability and national shipping lanes, these can vary anywhere between 3 – 15 business days.

Parcel Shipping

Estimated shipping times on single item, in-stock orders are 2 – 4 business days depending on position in the order queue. Actual delivery dates vary based on carrier.

Victron | MultiPlus-II 12/3000 | 12V Input | 3000VA Output 120/240V | 120A Charger | Transfer Switch Manual

Reviews

There are no reviews yet.

Be the first to review “Victron MultiPlus-II 12/3000: 3000VA Split-Phase Inverter/Charger with 120A Charging”

Your email address will not be published. Required fields are marked *

Frequently Asked Questions

At typical cabin consumption of 10-15 kWh/day, the MultiPlus-II serves as the central inverter/charger for years of reliable operation. Pair it with a LiFePO4 battery bank and MPPT solar charger, and your monthly utility cost drops to zero. Compared to running a gas generator for backup — fuel, maintenance, noise, and limited runtime — this inverter pays for itself through eliminated fuel costs alone. View it as the core component of a system that removes your dependence on the utility company permanently.
Yes. Off Grid Vault is an authorized dealer for Victron Energy. Warranty claims go through us directly — not through a ticket queue with a marketplace seller. When you purchase from an authorized dealer, you get full manufacturer warranty coverage, legitimate technical support, and assurance that your unit is not grey-market or refurbished. This matters on a component as critical as your inverter/charger.
The MultiPlus-II 12/3000 is designed for 12V battery systems and includes a 120A charger, making it directly compatible with 12V LiFePO4 banks. However, to ensure your battery BMS communicates properly with the inverter and charge parameters are correctly configured, we recommend taking advantage of our free system design consultation. Tell us your battery specs and load profile, and we will confirm compatibility and optimal settings before you install.
The MultiPlus-II is designed to integrate with Victron MPPT solar chargers or grid-tie PV inverters as part of an energy storage system. It manages power flow between your solar array, battery bank, and AC loads. For a complete off-grid system, you would pair this inverter/charger with MPPT charge controllers, solar panels, and a LiFePO4 battery bank. Our free system design consultation will size the exact solar array and battery capacity for your daily kWh consumption.
Victron Energy provides a 5-year manufacturer warranty on the MultiPlus-II. As an authorized Victron dealer, Off Grid Vault handles warranty claims directly on your behalf — you are not redirected to a third-party support queue. For our 30-day performance guarantee, if the unit does not perform as specified and is returned uninstalled in original packaging, we will make it right. After installation, the manufacturer warranty covers defects in materials and workmanship through us.
The MultiPlus-II 12/3000 produces 120/240V split-phase AC output, meaning it can supply both 120V standard household circuits and 240V loads like well pumps, dryers, or shop equipment — without stacking a second unit. This is critical for whole-cabin or whole-home backup where you need to run 240V appliances simultaneously with standard 120V lighting and outlets. The split-phase output is generated internally, simplifying your wiring and reducing the number of components in your system.
SKU: 1593053 Categories: , Brand:

The Off Grid Vault Promise

Every product we carry is vetted for real-world performance. This is what we stand behind.

Authorized Victron Dealer Warranty claims handled directly through us — no ticket queues, no runaround.
30-Day Performance Guarantee If it doesn't perform as specified, we make it right. Uninstalled returns accepted within 30 days in original packaging.
Free Shipping & System Design Ships free on all orders. Need help sizing your system? Our engineers provide free consultation before you buy.

Related products

About victron MultiPlus

victron is a trusted manufacturer of premium multiplus. OffGridVault is an authorized dealer offering the full victron lineup with free delivery, price match guarantee, and expert support.

View all victron products →

Related Categories

AC/DC Enclosure 2 products Air Handlers 8 products Air Heaters 2 products Amp Hub 2 products Awnings 15 products Batteries 3 products
Join the Grill Island Community

Expert Picks, Straight to Your Inbox

No spam. Just the gear worth knowing about.

No spam. Unsubscribe anytime.