My IPad has a problem powering up
My IPad keeps fluttering between powering up and going off when plug into power source
iPad, iPadOS 16
Hello~ The first link says iPhone and iPod but some things you can try for iPad…
If your iPhone or iPod touch won't charge - Apple Support
If your iPad won't charge - Apple Support
You may also have a battery issue…which will need an appointment with Apple…
Genius Bar Reservation and Apple Support Options - Apple
~Katana-San~