I curious about these things, i know between PC USB VS WALL CHARGER, wall is faster,but how about wall charger vs power bank? is it slow as PC USB or just same as wall charger, thanks.
The one with the higher current output.
Check rating at back of your wall charger and power bank. compare dc output, which one has larger value of multiplication between voltage and current that one will charge faster.
Wall charger because it has its own direct source to the mains.
