I just wanna know how to resolve my problem. I lost the original charger of my Asus Zenfone 4 selfie, now I am trying to use the charger of my Asus Zenfone 5, but instead of fulling, the battery of it was reverse charging. It always got drained and took me 6 to 7 hours charging while it is off. I really don't know what to do, please help!!!