Then, do another 100-0% cycle and charge it again. Take a look at battery health stats and see if there is any improvement. Do a third cycle like this and if there is still no improvement then you might want to consider getting it replaced when it goes close to 80% or even now. Yes, it's normal. You won't hurt your device by charging it overnight. There's very little reason to look at your battery health unless you're seeing some sort of problem with the way your phone is functioning or if your close to the end of the warranty. Check the battery health in about eight months. If it's at 80% or below, make arrangements Battery capacity dropped After owning the iPhone 11 Pro Max ever since it came out, my battery was at 100%. A couple months back it dropped to 99%. I’d say about less than a month it dropped to 98%, then less than a month down to 97% ever since that my battery health capacity has been dropping significantly faster. More like a couple week now. Idk why some people say it’s bad for the battery. I’ll sometimes wake up around 4 am and it’ll say on the screen it’s only charged to 85% and it knows my sleeping habits and it’ll finish the rest of the way right before I wake up at 6. It's not real time. There are lots of reports that it can seem to stay at 100% and then all of a sudden it might drop to 97% or 96% at once or quickly in succession 97->96 within days. It updates where it might now show any kind of real time display of the underlying battery health. Reply. 5uFvCq3.