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  • Battery drained when laptop is powered down!

    Hi folks,

    Came to notice that the batteries of some laptops that were powered down for a while, were completely drained.
    My understanding was that when the laptop is off, there is no power consumption and therefore shouldn't affect the battery levels.
    Do the batteries self discharge with time? or is it dependent on the battery type?
    I have done a quick search and getting mixed info on the issue.
    Any thoughts?
    Caesar's cipher - 3

    ZKHQ BRX HYHQWXDOOB GHFLSKHU WKLV BRX ZLOO UHDOLVH LW ZDV D ZDVWH RI WLPH!

    SFX JNRS FC U6 MNGR

  • #2
    Re: Battery drained when laptop is powered down!

    They discharge over time. The older the battery the faster it dies.
    1 1 was a racehorse.
    2 2 was 1 2.
    1 1 1 1 race 1 day,
    2 2 1 1 2

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    • #3
      Re: Battery drained when laptop is powered down!

      Keep in mind also that there must be a small amount of power being consumed to keep the machine's "starting coils" "warm". When you press the power button of a modern computer, what you are doing is causing a signal to be generated by the motherboard that signals to the PSU to supply the "working" power.
      Gareth Howells

      BSc (Hons), MBCS, MCP, MCDST, ICCE

      Any advice is given in good faith and without warranty.

      Please give reputation points if somebody has helped you.

      "For by now I could have stretched out my hand and struck you and your people with a plague that would have wiped you off the Earth." (Exodus 9:15) - I could kill you with my thumb.

      "Everything that lives and moves will be food for you." (Genesis 9:3) - For every animal you don't eat, I'm going to eat three.

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      • #4
        Re: Battery drained when laptop is powered down!

        Cheers, ah yes they do self-discharge at a variable rate depending on the type and conditions. http://en.wikipedia.org/wiki/Lithium-ion_battery
        Caesar's cipher - 3

        ZKHQ BRX HYHQWXDOOB GHFLSKHU WKLV BRX ZLOO UHDOLVH LW ZDV D ZDVWH RI WLPH!

        SFX JNRS FC U6 MNGR

        Comment


        • #5
          Re: Battery drained when laptop is powered down!

          Lithium batteries also jump 10' up in the air, cause jObsian sTatus sYmbols to self-destruct and set fire to airport workers' trousers.
          Gareth Howells

          BSc (Hons), MBCS, MCP, MCDST, ICCE

          Any advice is given in good faith and without warranty.

          Please give reputation points if somebody has helped you.

          "For by now I could have stretched out my hand and struck you and your people with a plague that would have wiped you off the Earth." (Exodus 9:15) - I could kill you with my thumb.

          "Everything that lives and moves will be food for you." (Genesis 9:3) - For every animal you don't eat, I'm going to eat three.

          Comment

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