My no.1 d5 always charging. 
Heh - I’m using my glasses box to keep watch out of my bedside table’s edge 
I just use my asus powerbank that tunes to d color of my watch. At the same time its a charger.
Turn on rotate clock face and you will be able to read the face correctly.
how long does it take to charge? have you tried when the watch is off?
When I’m using my 2Ah wall charger, 30-45 mins but when i use my asus powerbank which I don most, 40-50mins from 10-100%
That is reasonable