I have this problem for a couple of days. When I first plug it in A54 doesn't fast charge for like 10 or 15 minutes or maybe more but some time later I plug it off and on again and then it fast charges again. It wasn't like that before. I bought it on August 1 so it's a new device but why does it do that? Fast charge option is on and the adapter seems fine when I use it on S20 FE. This week it got new software update and it happened for the first time that day. Anyone have the same issue?
settings > search "battery"
here u can see the time remaining to full charge