Lenovo ultrabook u510 li ion battery in sleep.mode how to wake up

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  • sureshbobby
    Senior Member
    • Mar 2015
    • 137
    • India
    #1

    Lenovo ultrabook u510 li ion battery in sleep.mode how to wake up

    Lenovo u510 battery dead after full discharged
    Its not waking up with charging showing that 4 min to full charge
    Is there anyway to bring back to life
    It is 11.1 li ion battery pack
    No signs of voltge at battery
    Is it possible to boost withdc power supply if possible please guide me
    Thank you friends and techies
    Tags: None
    • piernov
      Super Moderator
      • Jan 2016
      • 4435
      • France
      #2
      Re: Lenovo ultrabook u510 li ion battery in sleep.mode how to wake up

      No, the battery's microcontroller probably entered permanent failure mode. You can't do anything about it, just buy another battery. You could still try to leave it charging for a few hours, but it will probably not charge.
      OpenBoardView — https://github.com/OpenBoardView/OpenBoardView

        Comment

        • ktmmotocross
          Boardkiller
          • Feb 2014
          • 3578
          • slovakia
          #3
          Re: Lenovo ultrabook u510 li ion battery in sleep.mode how to wake up

          or u can disassembly it and charge the cells

            Comment

            • piernov
              Super Moderator
              • Jan 2016
              • 4435
              • France
              #4
              Re: Lenovo ultrabook u510 li ion battery in sleep.mode how to wake up

              @ktmmotocross if it is in permanent failure mode, the fuse is blown and the controller is disabled. Charging the cells manually won't help and it can be dangerous if you don't know how to charge lithium cells.
              You can however extract the cells and save them for another battery where the cells are worn out, if the cells themselves are still good.
              OpenBoardView — https://github.com/OpenBoardView/OpenBoardView

                Comment

                • sureshbobby
                  Senior Member
                  • Mar 2015
                  • 137
                  • India
                  #5
                  Re: Lenovo ultrabook u510 li ion battery in sleep.mode how to wake up

                  Hi Friends,
                  Thank you so much for your suggestions. By luck or what the battery is back to life again and acting as normal. i have run the gauge test in lenovo energy manager. after that its been starting working again. Hurray it saved me $40.

                  Thank you all

                    Comment

                    • sureshbobby
                      Senior Member
                      • Mar 2015
                      • 137
                      • India
                      #6
                      Re: Lenovo ultrabook u510 li ion battery in sleep.mode how to wake up

                      Most probably li Ion battery will go to sleep mode because of fully discharge. i thought that it happens to my battery.
                      Last edited by sureshbobby; 04-20-2017, 12:45 AM.

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