The Innergie PocketCell Duo is an ultra-compact rechargeable battery bank, featuring an impressive 6,800mAh capacity and duo USB power-ports that allow you to charge two tablet-PCs or two smartphones to full charge twice simultaneously. Two built-in USB power ports combined with the critically acclaimed Magic Cable Trio featuring an Apple-compliant tip, a micro and mini-USB tip-enable you to charge up to 10,000 USB-chargeable devices anytime, anywhere!