[Q] Recovery Showing 8% Battery When Battery Is 4.28 Volts
I have a fully charged battery. Voltage verified by charging overnight with the phone off. Following morning the battery is tested with voltmeter and shows 4.28 volts. Boot the phone into recovery. I'm using TWRP 2.6. In recovery, TWRP shows battery at 8%, not the 100% that it should be. The phone gets stuck in the Sprint boot screen. If I have the phone plugged into the charger, the phone works fine. As soon as I remove the micro USB, the phone shuts down on its own. Try to turn it on and it gets stuck in Sprint boot screen.
I've also tried older versions of TWRP just in case it was the recovery. I've also tried different ROMs. Same issues. So I think I can eliminate the following from the root cause: Recovery and ROM.
Possible causes are circuitry in the battery that would tell the recovery that it is only 8% full or circuitry in the actual phone that isn't recognizing the fully charged battery.
So how do I troubleshoot this?