"...at some point [you will] find yourself out on the go, camping, or away from your home and in need of charging your mobile device. This is where the Tekkeon TekCharge MP1550 comes in."
Raiden's Realm

"TekCharge MP1550 portable charger uses four AA batteries to power and charge cell phones, mp3 players, PDAs, digital cameras and many other portable devices on the go."
Star-Telegram.com