Keep your batteries charged with the help of the Nature Power 40-Watt Briefcase Solar Panel. Equipped with two monocrystalline solar panels that can fold-up into the size of a briefcase plus comes with a convenient handle for easy carrying and storing. Includes a tilt mount to help get the perfect angle to collect sun rays. Additional Features• Adapters included for use on Rv's pre-wired for solar panels• Items included: 2 x 20W folding panel briefcase, battery clamps, 2 mounting poles, and 1 charge controller Equipped with sturdy, durable aluminium frame Maximum power of 40W 12V battery charger included