Excessive Battery Drainage (80%-20% in 12hrs) With No Usage
iPad Pro 11" 2018 model
OS: 17.6.1
Battery Health: 89% (checked at Apple Store yesterday).
Was at Apple Store having the battery checked because I noticed it was draining excessively even without use. Started at the store at 88%, by the time I left, it was at 75% within 40 minutes. Sure their diagnostic tests may tax the iPad a little more but the drain was very apparent and there was nothing the Apple tech could do because the battery health was at 89%. I explained that sure the battery can hold 89% of the charge but it's not acceptable that with minimal use, it drains that quickly. Tried to "restore" the iPad but wasn't able to so the only suggestion that the tech had at that point to mitigate the battery drain was to "use dark mode". WTF.. seriously!?!
This is a screenshot of the battery drain without much usage. As you can see, it hasn't been used and Settings eating up 50% of battery in 12hrs is ridiculous. FIX THIS ISSUE APPLE! This is NOT acceptable and by your diagnostics, the battery is within acceptable health limits so it's likely an issue with your software because as you can see in the screenshot below, nothing but your own Apple apps have been running.
iPad Pro, iPadOS 17