BoxWave Rejuva Power Pack Amazon Kindle Fire HD 8.9" Power Bank (13000 mAh) - Portable 13000 mAh Rechargeable Li-ion Battery Charger w/ Built In High Output USB Ports (Jet Black) 13,000 mAh Internal Battery Dual USB charging ports Sleek, Compact Design stores just about anywhere Includes one Micro USB Charging Cable