This is the updated version of USB external battery for the latest iPad (4th gen) with Retina display, the NEW iPad (3rd gen), iPad 2 and iPhone 5. The new iGeek has a boost in battery capacity and provides your smart phones and tablets with even more backup power than before! Another update to the recent model further brings micro-USB compability, allowing you to recharge the battery unit via the common micro-USB standard. When you travel, there’s no more need to charge your devices through an electrical outlet. The iGeek IMP99D is charging, made simple.