Question about Anker PowerCore

In short: Yes, but not as fast as other mobile phones.

Reason:
Apple does not support any of the patented fast charging methods that the Powercore offers. (Quick Charge 3.0 or PowerIQ).
Nevertheless, the devices can access the conventional current output of 5-6V/3A or 6-9V/2A aka approx. 18W and thus be charged faster than with the standard charger that Apple supplies with the iPhone / iPad. This only supplies 5W.

I am very pleased. Yes it loads quickly