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    Battery life immediately drops to 98% after disconnecting power cable

    Discussion in 'Dell' started by brendon, Jun 4, 2008.

  1. brendon

    brendon Notebook Enthusiast

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    is there any reason for this?

    when i remove the power cable from my m1530 the battery life immediately drops to 98% instead of going down slowly from 100%. when i plug the cable back in, it becomes fully charged @ 100% again.
     
    brendon, Jun 4, 2008
    #1
  2. talin

    talin Notebook Prophet

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    It happens to me too. I don't think the battery meter is completely accurate.
    IIRC, the battery meter in vista measures voltage levels, and once the battery is under load (AC unplugged), voltage drops slightly and so registers slightly less charge.
     
    talin, Jun 4, 2008
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  3. brendon

    brendon Notebook Enthusiast

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    it didn't happen in the past until i fully discharged and fully charged my battery about 1-2 weeks ago. and oddly, my battery wear level has also decreased from 4% to 1%. i'm just wondering if the full discharge I've done actually caused a cell to die, thus giving me that battery life problem.
     
    brendon, Jun 4, 2008
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  4. talin

    talin Notebook Prophet

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    That could very well be.
     
    talin, Jun 4, 2008
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  5. Khris

    Khris Yes I am better than you!

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    I think it's a case of the voltage not being properly measured in Vista and that's why it "seems" to drop right away. I wouldn't worry about it.
     
    Khris, Jun 4, 2008
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  6. brendon

    brendon Notebook Enthusiast

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    well, but I'm using windows XP. I'm trying to do a partial discharge now and see how it goes after recharging it back to full again.
     
    brendon, Jun 4, 2008
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  7. Rich.Carpenter

    Rich.Carpenter Cranky Bastage

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    I've seen this behavior on laptops in the past. I wouldn't worry about it.
     
    Rich.Carpenter, Jun 4, 2008
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  8. crazyanz

    crazyanz Notebook Consultant

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    why bother ? just look at the overall battery life as long as that is oke you shouldn't be worried
     
    crazyanz, Jun 4, 2008
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  9. NewDelly

    NewDelly Notebook Consultant

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    Actually I think this is the same thing that happened with my battery right before it completely failed. That's not to say the same will happen to you, but if it does please update this thread. :)
     
    NewDelly, Jun 4, 2008
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  10. r34p3rex

    r34p3rex Notebook Consultant

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    doesn't really matter might be misreading
     
    r34p3rex, Jun 4, 2008
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  11. teslas

    teslas Notebook Consultant

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    how do you cehcke the battery wear level?
    teslas
     
    teslas, Jun 4, 2008
    #11