... . Charging time:2-3hr1,Compatible with Iphone, ipad ,ipod ,Nokia,Blackberry,HTC etc .2,smart shape design ,no need to remove ... over discharge and damage under any extreme condition.4,Microcomputer power control indicator integrated5,use iphone original interface ,no additional wiring ... the battery ,safe and convenient . External Battery Pack 1200 mah power bank for iPhone, iPad, iPod, Blackberry