iPad 11” battery isn’t lasting more than a few hours
iPad 11" only holds a charge for several hours. Only a few years old.
[Re-Titled by Moderator]
Clearly charging is not the issue - but instead your iPad battery.
You might be best advised to seek assistance directly from Apple Support - and request a remote diagnostic test.
You can contact the Support Team using the Support link at top-right or bottom-left of this page. Alternatively and perhaps easier, you can initiate and manage your support cases using the excellent Apple Support App. If not already installed on your iPad, the App can be downloaded from the App Store:
https://apps.apple.com/gb/app/apple-support/id1130498044
You might also visit the Genius Bar at your local Apple Store or Apple Authorised Service Provider (AASP) - where the technicians will be able to test and assess your iPad - and you will be able to explore your available options: