im glad im not the only one. i got mine May 9 and i immediately noticed the issue during the first charge, stuck at 97%. yesterday was worse, it was stuck from 60% overnight and then it discharged to 45% when i woke up.and its even plugged properly. the HELL.
I use all original accessories. it's so annoying when you buy new stuff and then you get this kind of experience. Samsung, if you're listening please FIX THIS! this phone is NOT cheap. sorry for the rant.