1. AC Question's Avatar
    Why did my tablet phone drain so fast when i used it 100% full but after a minutes it became 1% but when i reboot it it backs to 100% .
    08-23-2017 09:22 AM
  2. Rukbat's Avatar
    If it keeps doing that - going from 100% to 1% after a few minutes, then back to 100% after rebooting, it's one of two things:

    1. The battery calibration is off. (You can recalibrate it with Battery Calibration, but the tab has to be rooted.)

    2. The battery has a dendrite, so it shorts after a few minuts of use on a full charge. If that's the case, it has to be replaced.

    Just keep using it after it gets to 1%. If it keeps running for 10 minutes, it needs recalibration. (There's a file in the system that keeps a record of the battery voltage vs. the percentage charge. If that file shows that just a bit less voltage than fully charged is fully discharged, that's what you'll see, even the battery isn't discharged.)
    08-23-2017 12:20 PM

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