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DELL XPS 13 battery not detected

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    DELL XPS 13 battery not detected

    hi guys
    xps 13 motherbosrd AAZ80 LA-C881P
    Schematic attached

    battery not detected
    255% remaining
    pluged in not charging.

    battery was replaced but still same problem.

    no shorts and diode mode readings on DAT_SMB, BAT_PRS,SYS_PRES are good
    with charged battery the laptop will work until it drains.

    any ideas?

    thanks
    Attached Files

    #2
    Re: DELL XPS 13 battery not detected

    What are the voltage and diode mode measurements on SMB CLK and SMB DATA?
    OpenBoardView — https://github.com/OpenBoardView/OpenBoardView

    Comment


      #3
      Re: DELL XPS 13 battery not detected

      Originally posted by piernov View Post
      What are the voltage and diode mode measurements on SMB CLK and SMB DATA?
      with charger and battery connected :

      batt + 6.6V
      CLK_SMB 1.6V
      .DAT_SMB 2.2V
      BAT_PRS 0V
      short to ground when i connect battery on BAT_PRS

      thanks

      Comment


        #4
        Re: DELL XPS 13 battery not detected

        Originally posted by claudyu07 View Post
        hi guys
        xps 13 motherbosrd AAZ80 LA-C881P
        Schematic attached

        battery not detected
        255% remaining
        pluged in not charging.

        battery was replaced but still same problem.

        no shorts and diode mode readings on DAT_SMB, BAT_PRS,SYS_PRES are good
        with charged battery the laptop will work until it drains.

        any ideas?

        thanks
        I suspect battery is dead as it showing 255% remaining.

        Comment

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