Battery indicator acting weird

We, just users like you, cannot diagnose that kind of issue remotely, sorry.

If you already tried (to no avail) all the steps provided here:--> If your iPad won't charge - Apple Support, AND if a restart or forced restart of your device didn't help, contact Apple Support directly, using this link:--> Get Support , or make an appointment and have your device inspected at an Apple Store or AASP (Apple Authorized Service Provider) among this list:--> Apple – LocationSelector. After checking it out, they'll give you all the available options.

Regards

Giulio

A forced-restart of your iPad might clear an unexpected software condition:

• On an iPad with a Home button: Press and hold the top button and the Home button at the same time. When the Apple logo appears, release both buttons.
• On other iPad models: Press and quickly release the volume up button, press and quickly release the volume down button, then press and hold the top button. When the Apple logo appears, release the button.

If the problem persists, you would be well advised to seek assistance directly from Apple Support - or from the technicians at the Genius Bar at your local Apple Store.

You can contact Apple Support using the Get Support link at top-right of this page. Alternatively you can open a support case using the Apple Support App:

https://apps.apple.com/gb/app/apple-support/id1130498044