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    Findigs about timeline excessive battery drain

    Discussion in 'Acer' started by posteljon123, Mar 6, 2010.

  1. posteljon123

    posteljon123 Newbie

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    Ok, here we go, acer 3810tz :

    1.Laptop turned off -> charger unplugged -> turned on after 15h, battery bar:
    99,99-93,0= 6,99% of drain

    2.Laptop turned off -> charger stays plugged -> turned on after 15h, battery bar:
    99,7-99,0= 0,7% of drain

    3.Charger unplugged (laptop goes to on battery mode) -> laptop turned off ->
    -> turned on after 48h, battery bar:
    98,0-97,0= 1,0% of drain


    Conclusion:

    There seems to be a bug in BIOS power managment, so:
    1. Unplug charger, laptop goes to on battery mode (green leaf).
    2. Turn off laptop
     
    posteljon123, Mar 6, 2010
    #1
  2. Dekimasu

    Dekimasu Notebook Enthusiast

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    Interesting... I wonder why your post hasn't attracted any attention.

    I'll try this, thanks.
     
    Dekimasu, Mar 7, 2010
    #2
  3. posteljon123

    posteljon123 Newbie

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    Dekimasu , please give some feedback too !
     
    posteljon123, Mar 8, 2010
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  4. aznguyphan

    aznguyphan Notebook Evangelist

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    What was the point of case 2? Did you unplug eventually after you turned off the laptop? Otherwise the battery is still discharging, it's just being charged by the A/C at the same time.

    Case 1 vs 3 is good to know though.
     
    aznguyphan, Mar 8, 2010
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  5. posteljon123

    posteljon123 Newbie

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    I just wanted to be sure that connected charger does not cause excessive drain.
    You are right: battery charges at the same time and the battery drain is minimal.
     
    posteljon123, Mar 8, 2010
    #5
  6. Tinderbox (UK)

    Tinderbox (UK) BAKED BEAN KING

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    On my 5810T i use to loose 2% per night 10hrs while shutdown , a/c power off , but after disabling "wake on lan" in the bios, I can go 2 days with no drain and then a 2% drop , once battery charge is below 96% the battery will start to charge.
     
    Tinderbox (UK), Mar 8, 2010
    #6