The Powapacs folding solar panels are equipped with SunPower solar cells offering an efficiency of over 23.5%. This energy can be used to charge a number of devices via the integrated USB port.In addition to the USB outputs, the Powapac Solar Panels have an 18v DC output meaning it can be combined with the Powapac Atom to offer a versatile, convenient and portable off the grid system that provides power anytime, anywhere.High efficiency >23.5%Compact design2.1mm DC cable for remote chargingLightweight 996 gramsSolar panel type SunPower (Monocrystalline)Output 2 x USB - 5v /2100 mAOutput DC - 18v / 3,170M mA (DC cable 3 meters)Waterproof PVC600DFolded size is 30.5 x 17 x 3.5 cmFolded out size is 121 x 29.5 x 0.3 cm