With premium grade rechargeable lithium battery, this high capacity battery can effectively provide over one charge to mobilephone, camera, ipad, mp3 players and other electronic products. Equipped with smart technology to charge your device faster than standard usb chargers. This small power bank charges in about 3 hours at 5V/1A and outputs at 5V/1A. For the small capacity we give to it, it becomes very economical for these who could be out for really short time and only need to charge their electronic devices once and little more.