My 2 year old laptop's battery health is at 71% after I've only charged it to 80% to take care of the battery.
My old laptop from 8 years ago didn't have a way to limit charge so it was always at 100%, I even used it as a server for a while after I got my new laptop, always plugged in always charging and the battery health on it is 69%
So what's the point in trying to take good care of the battery? I know heat plays a factor as well, but if anything, my new laptop is cooler than my old one. Old one had terrible airflow.