... , over discharge, short cut protections - iphone ID resistors inside, compatible with iphone 4/4gs/5, ipod series and ipad- Depress the ... into protection model. To reactivated the unit, charge it again with an AC adaptor or computer USB output. - Depress and charge ... /5, ipad compatible, but it is also ok as external battery pack of 99% of mobiles and tablet pc, game players, PSP ...