100W Solar Panel + Charge Controller 12V Polycrystalline Module Marine Off GridThe KMG Solar Panels provide you with a clean, quiet, and renewable way of providing power for all applications. The Solar Charge Controller manages the power going into the battery bank from the solar panels. It ensures that the batteries are not overcharged during the day, and that the power doesnt run backwards to the solar panels overnight and drain the batteries. Solar is the perfect solution for adding power to your off grid cabins, RV