iPad Air 2 Battery won't charge after screen replacement

I replaced my iPad Air 2's screen. It went well and worked for months now with just only a minor problem: when I plug it into a power source, the touch screen jumps around and isn't accurate. It did not bother me too much since I can use it after its charged. Last night came the problem, it won't charge at all. I tried different usbs, different chargers, plugged into a computer, it all won't work. I searched on other forums and someone mentioned that it could have been the connection between the battery and the motherboard. So basically, the percentage of the battery is still showing, and is accurate, but it just won't charge. Can someone please help solve this issue? Thanks