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    Unknown device

    Discussion in 'Alienware M11x' started by THS, Sep 15, 2010.

  1. THS

    THS Notebook Consultant

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    I have everything installed, including command center, ect.

    I even got the FN-F2 to disable charging.

    However there is an unknown device in device manager thats bugging me.

    WHAT IS IT!!! lol

    Hardware ID : ACPI / SMO8800
     
    THS, Sep 15, 2010
    #1
  2. Tinderbox (UK)

    Tinderbox (UK) BAKED BEAN KING

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    Looks like it`s an accelerometer/freefall sensor.
     
    Tinderbox (UK), Sep 15, 2010
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  3. M11Ash

    M11Ash Notebook Evangelist

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    Confirmed, its the Freefall Sensor
     
    M11Ash, Sep 15, 2010
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  4. Radam

    Radam Notebook Geek

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    I didn't think this was possible?
     
    Radam, Sep 15, 2010
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  5. BA0701

    BA0701 Notebook Geek

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    Neither did I, as the last post I saw on this from Brian, erawneila, He stated that the only way to disable the battery charger, was to do so through the bios. He said the FN + F2 did not function.
     
    BA0701, Sep 15, 2010
    #5
  6. slickie88

    slickie88 Master of Puppets

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    Fn+F2 doesn't disable charging on either the R1 or R2. It will only show you the state of the battery with an icon. If charging is disabled in the BIOS then it shows a dialog box stating that charging is disabled.
     
    slickie88, Sep 15, 2010
    #6
  7. TalonH

    TalonH Notebook Evangelist

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    May I ask why you would want to disable battery charging?
     
    TalonH, Sep 15, 2010
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  8. BA0701

    BA0701 Notebook Geek

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    Constant charging of the battery can shorten it's life. If you use your system, a lot, while plugged in, it is best practice to disable the battery charge option, to help prolong the life of the battery.
     
    BA0701, Sep 16, 2010
    #8
  9. seraphkz

    seraphkz Notebook Consultant

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    You know, that's not really true... Once the battery is fully charged, the battery will be disconnected and the laptop will draw power from the AC alone.. Your argument might be valid when laptops first hit the market years ago, but technology has definitely caught up.
     
    seraphkz, Sep 16, 2010
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  10. kent1146

    kent1146 Notebook Prophet

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    The problem isn't with the battery over-charging... the problem is with the constant and periodic tiny little drains / re-charges on the laptop battery (happens even when the laptop is plugged in), the heat that this effect generates, and the fact that the lifespan of Li-Ion batteries degrade faster when it is constantly stored at 100% capacity. There have been small evolutionary steps in Li-Ion batteries (for example, many batteries are made by only allowing the device to charge up to 80 % of the actual capacity of the battery – a battery that is chemically capable of 60kWh of storage will only charge and be labeled to 50kWh, and will show that 50kWh is 100% of capacity). You will still get noticeable degradation in total usable battery capacity after about 1.5 – 2.0 years of keeping a battery plugged in all the time.

    The ideal storage for a Li-Ion battery that isn’t being used is to keep it stored at 40% of charge, in a cool dry place. It is also better to never let it fully deep discharge. You extend the life of the battery the most this way.

    Of course, that can be a hassle, and some people just say that the convenience of never having to think about battery charge and usage outweighs the cost of buying a new battery every 2 years for $80.
     
    kent1146, Sep 16, 2010
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  11. THS

    THS Notebook Consultant

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    You CAN disable/enable battery charging with FN + F2
     
    THS, Sep 16, 2010
    #11