Ultra compact, ultra lightweight and yet very durable, the PowerFlim® USB + AA Solar Charger is ideal for everyday use. The USB + AA Solar Charger charges most small USB devices. Proprietary charging circuitry maximizes charge into the batteries. It provides full charge in four hours of full sun, and with a charging light on the side of the enclosure, indicates charging status. Six grommets are built into the charger to allow for secure fastening to a pack or to the ground. Direct integration of the PowerFilm flexible solar panels onto the fabric allows for easy storage into a pocket.