Battery will not charge past 1%
My ipad air only charges to 1%. The battery is flat and when I attached the lightening cable it will make the icon of the cable disappear and show a battery in the middle of the screen that appears to be charging. The ipad gets to 1% and turns itself on but that is as high as it gets. Eventually the screen goes black again and the ipad does not recognise that the cable is still attached. If I remove the cable from the wall charger and put it into the USB on my laptop the whole process begins again until I change it back to the wall charger. I have tried different cables and chargers, some Apple and some not. I initially replaced the charge port as it seemed that was the issue because I could wriggle the cable and get the ipad to show charging. I have checked the soldering and it all appears fine. I Have tried the reset method and leaving the charger attached all night but nothing changes. I am beginning to think the problem may have been the U2 chip all along. Does anyone else think that is a fair assessment or is there something else I should be looking at?