MacBook Pro shows false empty battery

Discussion in 'MacBook Pro' started by PeterLC, Apr 12, 2018.

  1. PeterLC macrumors newbie

    Joined:
    Jul 26, 2016
    Location:
    St. Andrews, Manitoba, Canada
    #1
    I have a MacBook Pro, model 10,1. running High Sierra 10.13.4. Since Sierra this computer has often, but not every time, been failing to start - showing me the empty battery. When I then plug it in, a few seconds go by and it starts up and displaying anywhere from 25% to 65% battery. Why is the computer failing to start when unplugged, when it has ample battery life to work with?

    Thanks in advance. Peter
     
  2. jerryk macrumors 601

    Joined:
    Nov 3, 2011
    Location:
    SF Bay Area
    #2
  3. JPack macrumors 68040

    JPack

    Joined:
    Mar 27, 2017
    #3
    This is a strong indication your battery needs service.

    As the battery ages, the battery impedance increases and is unable to provide the "peak power" needed to start up a computer. The battery gauge loses calibration as this happens.
     
  4. Fishrrman macrumors P6

    Fishrrman

    Joined:
    Feb 20, 2009
    #4
    Use Coconut Battery (free download) to check the battery.
    Post a screenshot of your results here.
     

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