Voltaic Systems Arc 10 USB Solar Charger
Price
$39.00
Our favorite panel. Not expensive, packs small and light. All you need is some sun and a USB charging cable. 10 Watts with 5V/1.9A Output is enough power to charge up most cell phones in 1.5 hours.
For an extra $25 you can upgrade to the Arc 10W Solar Charger Kit which includes a 4,000mAh USB Battery Pack.
Dimensions: Open: 10" H x 13" W x 0.03" D - Folded: 10" H x 6.5" W x 0.15" D - 0.68 lbs.