Not charging ipad air
My ipad air 16gb 4G LTE recently shut off when it ran out of power. I left it charging for 4 hours, but when I came back the dead battery icon showed when I touched the home button. When I unplug it it shows the indicator telling me to plug it into a charger. I switched power bricks and cables and left it alone for an hour. Same thing when I came back. I tested both cables and bricks with another ipad and they both worked. I checked the port on the iPad for debris. Used compressed air and a bristled tooth pick to lightly brush or the port. The iPad is recognizing when the cable is inserted and removed but the battery doesn't seem to be accepting any power. Any advice?