Unleashing Off-Grid Power: A Look at a Massive RV Solar Upgrade

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March 31, 2025

Unleashing Off-Grid Power: A Look at a Massive RV Solar Upgrade

For RV enthusiasts who crave true off-grid freedom, a robust solar system is essential. In a recent video, Great Outdoor Solar showcased a stunning example: a comprehensive upgrade on a 2023 Grand Design Momentum 410th fifth wheel. Let’s dive into the details of this impressive setup.

From Factory to Fantastic

This RV initially came equipped with a decent foundation: a 2000-watt inverter, a lithium converter, and a 50 amp MPPT charge controller paired with 660 watts of solar. However, the owner desired a system capable of handling even more demanding off-grid adventures.

Battery Bank on Steroids

The upgrade’s centerpiece is a massive battery bank consisting of six 206 amp-hour SOK heated lithium batteries. This provides a staggering 1236 amp-hours at 12 volts, ensuring ample power for extended trips.

Inverter Powerhouse

To handle the demands of modern RV living, the system features two Victron Multiplus 2 12/3000 inverters. These provide a combined 4800 watts (or 40 amps) of inverting power, allowing the use of multiple high-draw appliances simultaneously.

Harnessing the Sun

The RV now boasts over 3000 watts of solar panels on the roof. This combines the original 660 watts with an additional 2400 watts, ensuring maximum solar energy capture. In sunny conditions, this system can even run the air conditioner without depleting the batteries!

Smart Control and Monitoring

The entire system is managed and monitored via a Victron Touch 50 GX, a user-friendly 5-inch display. This provides complete control and system information, and even offers remote access via Wi-Fi.

Power to Spare

This upgraded system offers incredible flexibility. It can power a mini-split air conditioner 24/7. Even when connected to a limited 20 amp shore power circuit, the system can supplement with battery power to run multiple appliances without tripping breakers.

Professional Installation

Great Outdoors Solar, the company behind this impressive upgrade, specializes in RV solar installations. They typically complete systems within a week at their Central Florida shop, offering both flat-rate packages and custom solutions to meet individual needs.

This upgraded solar system demonstrates the incredible potential for off-grid RVing. With careful planning and the right components, you can enjoy all the comforts of home, no matter where your adventures take you.