I've had this problem over the years, I just didn't think to ask anyone about it. Whenever I use the internet or game, I check my battery status on the bottom right side of the screen to see how much power I have left, just like everyone else. The problem is that when I checked my status, it would always show me wild times that weren't accurate. One time I was at 68% with 1 hour and 51 minutes left, which seems correct, but then I'm at 65% with 1 hour and 54 minutes left. As of writing this, I'm looking at 62% with 4 hours and 35 minutes. Is there a way to fix this? I'm using an Acer Nitro 5, AN515-53 if that helps.
[Edited the thread to add model number to the title]