Since I installed Android 9 my phone will randomly power off at any amount of battery, and will not power on unless connected to a power supply. It tends to show the Google logo, and then power down again.

Recent examples, such as just now, the phone turns off at 45% battery. When I connect it to a power supply, it will turn power up again, but the battery shows as 2%.

The highest amount of battery it has done this with is 75% battery.

The handset is a Google Pixel, running Android 9.

Android version

What techniques can I use to debut this issue, and ideally resolve it? Could this be a hardware failure or a failed battery?

  • 1
    From the symptoms I highly suspect it's a battery which is slowly but steadly failing – Chrisii Feb 5 at 11:49

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