IPad Air 4 won’t charge using 2 different Apple chargers

These support pages should help with troubleshooting:

Charge and monitor the iPad battery - Apple Support

If your iPad won't charge – Apple Support

Troubleshooting generally requires substitution of the Power Adapter and cable for another known-good item.

If you continue to experience difficulties, you might be best advised to 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, Power Adapter and cable(s):

Genius Bar Reservation and Apple Support Options - Apple

Eagankaren Said:

"IPad Air 4 won’t charge using 2 different Apple chargers: Seems to be a common problem. Can’t update to v15 due to low charge and can’t charge. Tried rebooting. It decides to charge intermittently and now again. Ideas?"

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Troubleshooting iPad Power:

Try what is on these Links:

• If your iPhone, iPad, or iPod touch won't Turn On or is Frozen - Apple Support

• If the Screen isn’t Working On your iPhone or iPad - Apple Support

Hello ~ Take a look at link below and since you have already tried two chargers …go ahead and do a forced restart…follow directions in link and if still no joy then contact Apple…also in link:

If your iPad won't charge - Apple Support

Also:

Get your iPhone, iPad, or iPod touch ready for service - Apple ...

~Katana-San~

Have you swapped to other known good charging cables?