Look for ones with obvious burning. It may take a magnifying glass, If you are good at soldering it should be replaceable. This conclusion is based on what I know and still may be wrong though.
Follow this guide: https://www.howtogeek.com/217010/how-to-generate-a-battery-health-report-on-windows-8-or-windows-10/
Then check the report or post it here so we can see specifics of your problem.
First I would advise that you always keep it propped up in the back, This allows for better circulation. If that is not enough try to find some fan controlling software and play around with it to see if it helps.
I believe that it is a Chromium bug. The Github Forums have at least 4 threads with the exact same issue. Here is one of the threads: https://github.com/phonegap/phonegap-app-desktop/issues/362#issuecomment-130775883
If your computer runs Chromium or another program that uses Chromium that is...