Battery Problem

[Choyi]

I am using Samsung Galaxy Note 8. Once my battery reaches 20%, it quickly turns to 2% within a blink. Any idea !

[MrGEEK]

can you attach a screenshot of your battery usage list?

[iVirus]

I also faced the same issue with my A6 but I start facing almost after a year or more my got repaired as well.
So what I feel it is due how old battery is it.
Try with after stopping background applications run

[khanahmad]

I am using Samsung J7 prime once my battery reaches 25% it quickly turn off any solution pls help me very bad condition of my battery

[Vartik]

diagnose battery in the support section