Iphone 14 dead battery won't charge

Our power went out last night while my son's iphone 14 was plugged into a charger. The phone battery died while the power was out. The power came back on but the phone did not charge.

Now we cannot get the phone to charge with any lightning cable. We don't have a wireless charger.

We have tried:

different cables

different charging blocks

cleaning the charging port (it wasn't dirty)

We cannot do a reset because the battery is dead. The screen is black.

Please help, he is very upset. This phone is only about 3 months old.

Thank you