2022 Forest River XLR Boost 37TSX13

This system was designed around delivering constant power, whether it be from the batteries, solar panels, or the generator. While there is enough solar to continuously power the refrigerator, Starlink, and other small/occasional loads; the generator is ready to start up whenever the batteries get too low during a storm or if extra loads are connected. This allows for continuous power during extended dry camping trips, all without any user input.

The biggest challenge of this installation was fitting everything in the original battery compartment. The compartment itself was barely large enough to contain all of the various components. However, the biggest constraint was the access door only measuring 12" wide by 25" tall. This made it very difficult to work in! We wanted to avoid having to move the system to under the bed, so we were determined to make it work.

Two 24V 100Ah lithium iron phosphate batteries were installed in parallel, which replaced two 12V flooded lead acid batteries. The new LiFePO4 batteries also have self-heating capabilities, offering a maintenance-free battery experience. Paired with a 24V to 12V converter, the existing 12V system works as normal. A battery monitor was also installed to keep track of the battery state-of-charge and usage history.

Three additional 200W solar panels were installed in conjunction with the existing solar panel, increasing the total solar array from 200W to 800W. The solar charge controller was also replaced with a larger lithium-compatible model.

An inverter was installed to handle the trailer's 50A electrical service, while being able to provide 3000W on its own. The existing transfer switch allows for the trailer to be powered from shore power or the onboard generator. Its output wiring was rerouted through the new inverter/charger.

A series of timing relays were installed to be able to start the generator manually from the interior wall-mounted touchscreen display or even remotely through the VRM console. It is also programmed to automatically start and stop depending on the battery's state-of-charge, as well as periodically to help maintain the generator.

This trailer is now ready to provide power all the time! This is a massive upgrade for extended camping trips while exploring and enjoying nature, while not having to give up our modern amenities.