Problem here idk if it's a first

[Android Central Question]

I had 20 percent left on my s9 si naturally I put it to charge but when I did it suddenly started dropping really fast and in just about t seconds it went from 20 to 0 percent battery but stayed on since it was on the charger

 

[anon(10522518)]

I had this problem too with my j3. For me a quick hard reset worked