This customer wanted to be able to run larger loads like a microwave or a blender from their battery bank so we added a 2000W pure sine inverter along with a 480W solar charging system. The roof mount combiner box was prepped for easily adding a 4th panel in the future. Batteries weren't added, but preparation was made to the battery bank for future expansion.
This customer came to us with a price ceiling and asked that we give them the most power possible for their budget goal. Upon inspecting the trailer, we found that their batteries were completely dead. We replaced them with a pair of low cost Interstate Flooded batteries and added two 100W panels to the roof with a 25A SunRunner Signature MPPT core. The system can easily be expanded with the addition of two more 100W panels when the customer is ready.