Solar charger allows you to charge your device with clean solar energy wherever you are. No power source is needed as this device will convert light into battery power for your mobile device, such as cell phone, digital camera, PDA, mp3/mp4 player, iPod and laptop. Simply direct the solar panels at natural light and the built-in Lithium-ion battery will be charged with enough solar power to keep your device running, which make your mobile device really mobile.