iPad Mini Has 100% Charge, But Shows 0%
My wife's iPad mini has been misbehaving lately; she will let it charge overnight (using the proper Apple charger) and in the morning when she disconnects the iPad and flips its cover open it displays the "drained battery" symbol. When she reconnects it to the charger and waits for the iPad to acknowledge the connection, she can then remove the iPad and use it -- it shows the charge as being 100%.
This has happened a couple of times in the past two weeks and probably 3 or 4 other times in the last year. Any idea what is causing this? Is there anything we can do about it, or is this a hardware issue that we just have to live with?
Thanks...
iPad mini 2 Wi-Fi, Cellular, iOS 10.3.1