iphone 13 pro loses 9-10% battery overnight, is it normal?
Just got my hands on this iphone 13 pro 1 tb with 97% battery health 220 cycles with no history of repair. I did a ios 26.5 update before factory reset then downloaded my apps and copied my 200gb backup files from windows manually. I turned off the icloud, background app refresh, 5g, location service, etc and turned on other settings that would help to increase battery life such as dark mode, limit frame rate, reduce motion, etc. I also turned on the airplane mode and low power mode and it's been like this for 3 days now but it loses 9-10% battery overnight, from 11 PM - 7 AM, with no info about the app who consumed it. Idk if it's still indexing because there is nothing on the battery usage section on settings.
for those who's wondering why I do these battery optimized settings is because I just using this iphone mainly for it's camera and 2 apps, so I'm just prioritizing it's battery life and turning off other functionalities/features.
edit: I checked its info on 3utools, did diagnostics by pressing the volume up, down, and power button, and the results were fine.