Why does my Samsung S8, bought last year, instantly drop to 0% after hitting 68%?

[Android Central Question]

I've already cleared the system cache in recovery mode. Additionally, when I try to restart it, it goes into a loop of restarting over and over. What should I do?

 

[belodion]

The battery may be bad. It may be warranty-covered.
https://forums.androidcentral.com/showthread.php?t=409154