Ok well ive been charging and the iphone battery is completely charged but the case has been charging for almost 4 and a half hours and its not even completely charged. I dont know if maybe its defected or something but its not good enough for me. I really liked it also. I also noticed that when iphone charging is completely charged its still charging the iphone battery even when the usb cord is disconnected from power supply. Another thing is that when u take it off power supply ithe case keeps charging the iphone and when u go into lock screen it shows the battery status image. Where is my lock screen wallpaper. It states clearly on the energizer website that it has a smart battery technology that auto kicks in when iphone battery is depleted but i think that is not true. To me it seems like it kills the case battery first than the phone battery. Im going to take it back to best buy and get a refund and get me the new mophie juice pack since it on/off charging. The energizer case is nice but these few problems ruin it. If anyone else has one of these cases and im wrong please inform me.