u/Background_Biscotti6

Last summer I would use my pixel 2 watch and the Club 15 golf app. I could never get through 18 holes with it, but now this summer, I can't even get through 9 holes. Then when I throw it on the charger, it is quickly charged about 50%. I read where it could be getting a false reading on the battery level, is there a fix. Some places say to do a factory reset and not from a backup. Would that take away anything on the watch that would come from updates?