Chosen Solution
My Xiaomi A2 is not accepting a charge. I got a battery diagnostics app and it never goes to -mA. There have been discussions about this being a software issues, but I think in my case it could be a hardware issue as I used a macbook charger to charge my phone a few times. I remember the phone getting really hot whenever I did this.
I tried replacing the charge board with no luck.
As a desparate attempt to get some useful life out of this phone, I wanted to see if I could find an external battery charge so I could charge the battery by taking it out of the phone. This is what the connector looks like.
Is it possible to get some sort of device to charge these batteries?
William chou if you phone still works when it receives power from power supply while plugged in just get an external portable back-up battery case. If it does not then you may have to build something. I made mine for other batteries with a prototype board and a proper battery connector. Solder the connector to the board. determine which pins are power and connect a hacked USB cable to it. You will have to remove the battery anytime you want to charge it and connect it to that. You do know that the proper fix would be the best and that is to determine which component failed during the charge with the wrong adapter. Update (09/15/2019) Take a look on here as well as on here and see if they look compatible to what is on your board.
Hi William Before trying anything like this I would see if a replacement battery would fix all your issues. May types of power issues can be caused by the battery itself. If you cannot get a battery, this might work for you: https://www.instructables.com/id/Emergen…
