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Latitude E6400 Battery LED Flashing

Discussion in 'Dell Latitude, Vostro, and Precision' started by Wigster, Dec 7, 2009.

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  1. Wigster

    Wigster Notebook Guru

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    Hi,

    I have a Latitude E6400 running Windows 7.

    Just booted up my machine: for some reason the battery LED light is flashing. The battery seems to be charging and if I take out the power chord, the computer keeps on running on battery power.

    Update: when the battery completed charging, the battery LED just switched off.

    I have run the BIOS diagnostics, and everything is reported as having passed the tests.

    What is going on?

    Thanks
     
  2. LPTP-LVR

    LPTP-LVR Notebook Deity

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    What's going on is exactly what should be going on.
    flashing LED is charging, LED off is charged, LED on is running on battery.
     
  3. wrx

    wrx Notebook Enthusiast

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    This is completely normal. The LED starts flashing when the last 10% of the battery is charging.
     
  4. afhstingray

    afhstingray Notebook Prophet

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    if it flashes orange, that means the battery is critical or cannot hold a charge any more
     
  5. Wigster

    Wigster Notebook Guru

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    But that's not what it used to do: I've had it for a year. Maybe this is related to the A19 BIOS update?

    As far as I am concerned: the battery LED was on continuously when it was plugged into the wall. I've never seen it flash before. I frankly find it rather distracting.
     
  6. MDR8850

    MDR8850 Notebook Evangelist

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    huh....? it supposed to flash when it's almost 100%
     
  7. weirdo81622

    weirdo81622 Notebook Evangelist

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    Well, then something was wrong with your system. My behavior is as follows:
    Nothing: Running on battery, or running on A/C with battery full
    Blue flash: Charging
    Orange flash: Low battery (or bad battery)

    Mine isn't blue when it's running on battery - that would be a pointless indicator, no?
     
  8. Wigster

    Wigster Notebook Guru

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    In fact, the indicator would sometimes flash blue before, but that seemed to be correlated with the infrequent situation when the battery failed to charge even though it was plugged in.

    It seems to me that having it on constantly when charging is less distracting than flashing.
     
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