Aus Power Bank’s 21-Watt Solar Panel is a great power source for whenever, wherever  you need to charge your devices directly from its USB port. These days we seem to need to charge up everything almost on a daily basis- and sun is FREE, quick and easy. This unit is the perfect kit for camping, hiking or emergency use when the power goes out. Its 21 watts come from 3 x panels that provide plenty of power and conveniently fold up into a small, lightweight portable case with a velcro sealed compartment that holds the USB ports, and can carry your devices neatly tucked away.  The 21-Watt Solar Panel is an ultra-compact and powerful unit. When folded out the solar unit’s 3 panels and metal loop ‘handle’ can be hooked onto just about anything to drench in the sun that then powers your devices. Outside, the 21-Watt Solar Panel will directly charge most USB devices, most handheld USB devices including mobile phones, satellite phones, smart phones, GPS, MP3 player, and more. The intelligent USB  charging detects how much your device may draw boasting a huge 3.5A max.