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    T400s battery drain while hibernated/powered off

    Discussion in 'Lenovo' started by madamd, Jul 9, 2010.

  1. madamd

    madamd Newbie

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    hi

    i just got a new T400s from the MSFT store. it seems the hibernating/powered off battery drain is quite high? i set the max. charge to 80% and i leave my laptop hibernated for 24 hours unplugged, then 24 hours later plugged it back in and turned it on.

    the charge after 24 hours is ~ 10% less. is this normal? i have Wake on Timer disabled in BIOS... seems kind of high for ~10% a day for parasitic drain while its off.

    what are the typical parasitic drain rates for thinkpads?

    thanks
     
    madamd, Jul 9, 2010
    #1
  2. Myung

    Myung Notebook Enthusiast

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    I've got T400s from the same store as well, in Feb. I went through updating bios and checking power options, but still battery drain was noticeable, say compared to other thinkpads I have owned (T30 or X61s).

    My guess is that the battery drain may have something to do with the fingerprint reader on palmrest which is on with a small green light all the time (sleep, hibernation, or off...).

    If I take off the battery and put it back in place, then the green light goes away and the battery drain doesn't seem to be that much. It is just what I feel, and I don't know how significant it is.

    Well, it is a shame that such a wonderful machine suffers from UTI...
     
    Myung, Jul 9, 2010
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  3. madamd

    madamd Newbie

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    Myung, what green light are you tlaking about? i don't have a green light anywhere? is it by my finger print reader??
     
    madamd, Jul 9, 2010
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  4. Myung

    Myung Notebook Enthusiast

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    Yes, the tiny green light by the fingerprint reader (if you have activated the fingerprint reader, the light should be on when thinkpad is not on).
     
    Myung, Jul 9, 2010
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  5. madamd

    madamd Newbie

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    i see i did set any fingerprint data. since u got it from the MSFT store, did you check ur warranty? i had to call lenovo and have to reset the warranty start date to the day i bought it.
     
    madamd, Jul 9, 2010
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  6. Myung

    Myung Notebook Enthusiast

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    Yeah, I had to go through a few phone calls to get the warranty reset. But, first a few idiots on Lenovo service wouldn't update the warranty expiration date. Finally after hours of frustration and calling, the warranty on my machine is reset to expire in one year.
     
    Myung, Jul 10, 2010
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  7. madamd

    madamd Newbie

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    myung, i was looking at your previous posts, and you mentioned you returned the T400s; did you really return it? what about your BSOD problems?

    i been 'stress' testing my new T400s, everything looks good.

    thanks
     
    madamd, Jul 11, 2010
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