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Buy the Victron Energy MultiPlus-II 12/3000/120 at $99.99 (was $910) for powerful pure sine wave inversion, battery charging, and PowerAssist in RVs and off-grid systems—with 2x120V split-phase output.
Size
Categories : Inverters
SKU : IRO-INV-089
Get reliable off-grid power with the MultiPlus-II 3000VA 12V inverter charger. Perfect for RVs, boats, and land-based systems. At just $99.99, compared to $910.00, you save 89%—plus use coupon SAVE10 for extra savings.
Ideal for RVs with 50A shore power, boats, and off-grid homes. The 2x120V output allows split-phase (L1/L2) for larger appliances.
Connect to a 12V battery bank (e.g., 400Ah). AC input from shore or generator. For 30A RV shore power, use a power limit setting to avoid overload. Wire L1 and L2 to separate circuits.
At $99.99, this is an unprecedented deal for a 3000VA professional inverter charger. Compare with other units costing $900+. Get PowerAssist, seamless transfer, and high surge capability. Use coupon SAVE10 for additional 10% off.
3000VA pure sine wave output with 2x120V split-phase capability—runs heavy AC loads from battery.
PowerAssist prevents overload of 30A shore power by supplementing from battery—save on generator upgrades.
Only $99.99, an 89% discount from $910, professional grade at a fraction of cost.
Model: MultiPlus-II 12/3000/120
Power: 3000VA
Waveform: Pure Sine Wave
PowerAssist: Yes
Product Type: Inverter/Charger
Input Voltage: 12V DC
Output Voltage: 2x120V AC
Transfer Switch: 50A
Parallel Capability: Up to 6 units
Battery Charger Current: 120A
Seller: Iron Bridge Tools
MPN: MultiPlus-II 12/3000/120
The MultiPlus-II combines inverter and charger in one. With PowerAssist, you can run heavy loads even with limited shore power. The 2x120V output allows split-phase for 50A RV service. At $99.99, you get 89% off the original price—incredible value.
If you need less power, consider the Phoenix 500VA at $74.90. For higher power, parallel up to six MultiPlus-II units to achieve 18kVA.
Connect the battery bank (12V) to the DC terminals. Connect AC input from shore power or generator to the AC-in terminals. Wire the 2x120V output L1 and L2 to separate branch circuits. Use a 50A shore power cord or set input current limit for 30A.
It provides two independent 120V legs (L1 and L2), allowing split-phase 120/240V operation—ideal for running larger appliances like air conditioners and electric water heaters in RVs.
This can happen if there is an unbalanced load or a faulty wiring. Check that loads are evenly distributed between L1 and L2. Also ensure the PowerAssist setting is configured correctly and the shore current limit is set appropriately.
Yes, with PowerAssist it can draw up to 30A from shore and supplement up to 3000VA from battery, preventing overload. You need to set the input current limit to 30A in the settings.
Currently on sale for $99.99, reduced from $910.00. Use coupon SAVE10 for an extra 10% off. Free shipping on orders over $45.



I installed this in my RV and it's been incredible. The pure sine wave output is clean, and the PowerAssist feature is genius – it lets me run high-power appliances without tripping breakers. The Bluetooth setup was easy. Highly recommend for any serious RV or off-grid project.
This is a high-quality unit, but installation is not for beginners. You need to understand electrical wiring. Once installed, it works flawlessly. The split-phase output is a big plus for my 30A RV.
This thing is a tank. I'm running an entire off-grid cabin from it, including a well pump. It handles surges without flinching. The built-in battery charger is a bonus. Totally worth the money.
The inverter works as expected and the power quality is good. However, the fan is quite loud even under moderate load. I had to mount it in a different compartment to muffle the noise. It does the job, but not silently.
I had a question about setup and called Victron's support. They were super helpful and patient. The inverter itself works perfectly – I'm using it for my home backup system. The blue-tooth control is a nice touch.
It's a quality inverter, but the price is steep. I got it on a deal, so I'm happy. The only complaint is that the remote panel is sold separately, which feels like a money grab. Otherwise, it's great.
I'm pretty handy, but this installation was a nightmare. The manual is confusing and the wiring is complicated. After several hours, I got it working, but I'm not confident in my setup. It works, but I expected a plug-and-play experience for this price.
Works great.
I've used several inverters, and this is by far the most robust. The power output is stable, the charging is smart, and the app gives me full control. It runs my entire home workshop. I couldn't be happier.
This inverter delivers on performance and features. However, it's physically large and heavy, so make sure you have space. The fan noise is also noticeable. But it's reliable and does exactly what I need.
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Phone: +1 (206) 555-0194
Email: support@ironbridgetools.us
Address: 5128 NE 42nd St, Seattle, WA 98105, United States