That’s a lot of battery to lose overnight isn’t it. I can’t remember the last time I woke up to the same 100% battery my phone had before I went to bed.I'll have to give this another whirl tonight because just the other day I went to bed with 72% after a full day (stellar battery on this 13 Pro) and I woke up with 51%. I normally just charge overnight but I've been a little more mindful of the 40-80% method with this phone.
I did have my phone on charge for a couple of hours straight after the update. So, I don’t know if that helped. Waking up to 100% battery reminded me of the days when that was completely normal for iPhones and iPads. I hope it’s a sign of things to come. It would be great if apple spent this year fixing all the bugs in iOS and polishing things up. So, next year they start on a solid base. The last few iOS releases have been plagued with bugs.
Anyway, as I Said; I was pleasantly surprised with the battery % this morning on my 13pm. For me, the iOS betas seem to be more stable than the final versions.