On low battery it charges really fast between 1.6-1.7A but then when it get more % it goes slowly down to 1.4, 1.3, 1.2 etc. Hehe I used the phone a bit while charging but only max 5 minutes. I think thats waay faster than your stats. LG G2 charger 1.8A with magnetic cable. I started around 12% I think. I think there is a better charge possible that wasn't the maximum I've got out of this hehe.