iPad won’t charge

If you already tried (to no avail) all the steps provided here:--> If your iPad won't charge - Apple Support, It might be also a hardware (battery?) problem, but we cannot diagnose your issue remotely.

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 – Location Selector. After checking it out, they'll give you all the available options.

Regards

Giulio

Start here >>> Charge and monitor the iPad battery - Apple Support

As described your battery may require replacement. Assuming that the iPad remains functional, you would be well advised to directly contact Apple Support - and request a remote battery test. The result of the test may better inform your next steps.

You will find the Get Support link at top-right of this page. Alternatively, you can open a support case 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

As a further alternative, you might visit the Genius Bar at your local Apple Store - where the technicians will be able to test and assess you iPad:

Genius Bar Reservation and Apple Support Options - Apple