Multiple portable chargers exist that can charge your AA or AAA batteries. You can also charge your cell phone or MP3 player by the sun. The chargers range in price from $40 to $100+ and are readily available in stores such as REI, EMS, and Target. Manufacturers include Brunton, Solio, and iSol,
What a cool way to keep your small electronics and batteries working whether on a hike, hanging on the beach, or traveling to a distant land!