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    Sleep battery drain

    Discussion in 'Windows OS and Software' started by Peon, Oct 11, 2009.

  1. Peon

    Peon Notebook Virtuoso

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    For some reason, Win7 drains my battery extremely quickly in sleep mode... I lost over 25% of a charge by putting it to sleep overnight.

    Any ideas on what's going on?
     
    Peon, Oct 11, 2009
    #1
  2. GoodBytes

    GoodBytes NvGPUPro

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    Look for a BIOS update for your system, or contact your computer manufacture after October 22nd fro support.

    Of course, this is assuming that your system has all proper drivers without any conflicts
     
    GoodBytes, Oct 11, 2009
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  3. coolguy

    coolguy Notebook Prophet

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    It's normal for the battery to loose 1-2% per hour in sleep mode.
    I wouldn't leave my laptop unplugged under sleep.
     
    coolguy, Oct 11, 2009
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  4. Peon

    Peon Notebook Virtuoso

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    1-2% loss per hour is indeed normal, but 25% over the course of 6-7 hours is like 3.5% per hour in the best case. That's double what's normal.

    With Vista, I was losing about 10% in the same scenario so there's definitely something wrong.
     
    Peon, Oct 11, 2009
    #4
  5. goofball

    goofball Notebook Deity

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    do you have a USB device connected? perhaps you have a feature for USB that's always on and drawing power?
     
    goofball, Oct 11, 2009
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  6. Peon

    Peon Notebook Virtuoso

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    Nothing is connected, and I haven't touched the BIOS since I turned on VT over a year ago, so any such feature would've equally affected Vista.

    Of course, there could be a new OS feature that I'm not aware of, so if you have any ideas, then by all means let me know.
     
    Peon, Oct 11, 2009
    #6
  7. GoodBytes

    GoodBytes NvGPUPro

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    In the device manager, ensure that every device has the option to let the device sleep. Of course also notice if you see any Microsoft default drivers, as these are probably devices with missing drivers.
     
    GoodBytes, Oct 11, 2009
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  8. ccbr01

    ccbr01 Matlab powerhouse! NBR Reviewer

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    Totally sounds like a driver issue. See if your ACPI driver is appropriate for your motherboard/notebook. A part of ACPI driver is communication with sleep states of your hardware. Try looking that up.
     
    ccbr01, Oct 11, 2009
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  9. Bog

    Bog Losing it...

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    That actually sounds fairly normal, at least according to my experiences. Sleep doesn't seem designed for long-term periods of downtime. It is better for moving a laptop from meeting to meeting or class to class.

    ACPI functionality is provided by Windows. ACPI drivers haven't been needed for a while.
     
    Bog, Oct 12, 2009
    #9