Nature Power 55703 Folding Off-Grid Solar Panel Kit, 40-watt High efficiency folding mono crystalline solar panel produces up to 40-Watt or 2.92-Amp per hour of sunlight 400-watt modified sine inverter with two outlets allows you to plug in small devices 8-amp charge controller and connector cable included Battery not included, a minimum of one 12-Volt deep cycle battery is necessary to use this kit