Topeak Mobile PowerPack Backup Battery Pack

5200 mAh kigh power rechargeable backup battery pack allows charging of iPhone 4/4S/5,Ipad or other smartphones up to 3 times to extend usage of your phone and sport app programs. Integrated rubber strap mount allows to mount this pack underneath stem to have a clean and short wire connection. Includes 2 USB cables, 30 pin Apple connector to charge phone and USB to Micro USB cable to charge power pack. Charge time 7-8 hours and weight 158grams.