iPad rapid battery drain
Hello,
I have an iPad that I have been using for a few years and the product has always worked very well. Recently, (since I updated to iOS 16) the battery will go from 100% charge to 0% in a few hours when I am not using it at all. This has never been the case before.
When I check battery usage, it says thinly App in use is 'Homescreen', which indicates that there are no apps running in the background.
The device is essentially useless now because it doesn't keep any charge whatsoever.
I stress that this issue only began when I updated to iOS 16, so it is a sudden change rather than a gradual degradation of the battery.
Thank you in advance for any help.
iPad Pro, iPadOS 16