Help! Fast charging on my Zenfone 2 isn't working.

[Tiggyyo123]

I just recently purchased a 4GB Zenfone 2. It used to show fast/quick-charging whenever I used the ASUS charger. Few days ago, I lost my charger, and resorted to charging via USB cable. I also tried enabling the speed charging on the Clean Master Application. Now, I bought an ASUS powerbank and disabled the Clean Master speed charging, but I couldn't see any indicators of fast charging on the screen. Is this normal? How can I enable fast charging again? Thank you guys for your help!

 

[B. Diddy]

Welcome to Android Central! Is the ASUS powerbank compatible with Quickcharge 2.0?