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I have probably the same issue on my iPad Air 2, 64GB WiFi, iOS 12.3. It started when the charging cable was shorted a couple of weeks ago. I have a USB power meter so I could verify that the cable was shorted and I can also see when the iPad is draining power from the charger or not. When it stops charging, it remains like that until the next reboot so the software is disabling the lightning port completely until then if it detects an error. If I power it off and have it plugged in when it stops charging, it reboots automatically as it would if I would plug the charging cable while it was powered off. However, in that case it will stop charging again before it completes booting up. To charge it again I’m doing the following steps: (1) I unplug the cable from both the iPad and the charger (2) I power on the iPad and wait for the pin screen (3) I plug the cable first on the charger and then on the iPad (4) At that time, the charging icon becomes green and the battery charges. (5) After I give the pin, it...

I also bought a battery with APN 616-0435 while the original battery was 616-0431 on my iPhone 3GS. The first one was completely empty and it wouldn't charge. I returned it and got a replacement. The second one was charged at 44% but when I connected the charger, I saw the icon of the power plug on top of the battery icon instead of the lightning icon that would indicate that the battery was being charged. I left it on for a little while but the battery kept discharging. So I measured the voltage between the original battery and the new one and I found out differences: the pin out of the battery is (pin 1 is on the bottom of the battery) Pin 1: Ground Pin 2: NTC_CONN (data) Pin 3: BATT_TEMP_CONN (battery temperature, 2.5V should indicate 25 degrees celcious) Pin4: BATT_VCC (the actual power output of the battery) The thing is that measuring between Pin2 and Pin3 or Pin2 and Pin4 on the original battery would give me the same result as from Pin1 and Pin3 and Pin1 and Pin4, while on the new battery I was...