USB charging today is a mess. As far as I can see there is no charger on the market that can charge two devices at the maximum possible speed. And you have to check the specs of your cables to see if they can charge fast or slow. 

. What’s wrong with the U in USB?
-
-
Took me awhile to realise that USBC did not in fact mean anything but shape it doesn’t indicate thunderbolt or anything else really except it will fit
Thanks. Twitter will use this to make your timeline better. UndoUndo
-
Loading seems to be taking a while.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.