Solar panel foldable dual-port solar charger for 5v usb-charged devices including gps units, iphone, ipad, android phones and android tablets Tap into the sun's endless energy and keep your gadgets juiced up in the wild Brilliant power supply When you're out enjoying the great outdoors, enjoy yet another perk: free limitless power. With a maximum output of 5v / 2a among two ports, power up any usb-charged gadget at speeds four times faster than a computer usb port power: 15 watts (combined) Open-circuit voltage: 16 - 18v Operating temperature: 0-120 f Dimensions: 36" x 11.5" x 0.1" (unfolded) 11.5" x 8" x 2" (folded) Weight: 2 lbs 8 oz Dimensions: 36" x 11.5" x 0.1" (unfolded) 11.5" x 8" x 2" (folded) Weight: 2 lbs 8 oz