Having solar onboard is a great way to keep your batteries full, especially if you enjoy boondocking. Many RVers like to get off-grid, and although. When the sun is directly overhead (during the summer months), solar panels mounted flat on your roof can often fully charge your batteries. If you're still skeptical about the amount of energy gained by 'following the sun,' let's look at an experiment we conducted. We parked our RV facing. You can increase the efficiency of your RV solar panels by attaching each one to a tilt kit. There are several different systems that can be used. In. You can find adjustable and standard tilt kits for every size of solar panel online, through solar specialty stores, and even at Home Depot. They're very reasonably priced. Tilting the.