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  1. #1
    2 Star Lounger
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    Dead laptop batteries?

    Hello,

    When a laptop battery seems to be dying, is it poss. to revive it somehow or does it have to be thrown away?

    TIA.

  2. #2
    Super Moderator jscher2000's Avatar
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    Re: Dead laptop batteries?

    Laptop batteries generally last 1-2 years and then need to be properly disposed. Check with your local recycling authorities on how to do that.

    I suppose a chemical engineer could figure out a way to revive them, but I wouldn't want to have some science experiment sitting on my lap. Bad place for a fire or explosion.

  3. #3
    Uranium Lounger
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    Re: Dead laptop batteries?

    I'll second Jefferson. I used to "shock" rechargeable batteries for my 1:10 scale RC cars, simply because I was poor and that stuff was really expensive - and I needed a lot of batteries. It did not always work, and even then it was just a stop gap measure until I could afford a proper replacement.

    Science experiment sitting in your lap.... <img src=/S/laugh.gif border=0 alt=laugh width=15 height=15> Yes, it is time for a new one!
    -Mark

  4. #4
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    Re: Dead laptop batteries?

    We had a fancy HP Notebook (of some fashion) in the office not too long ago, and it was running a battery re-conditioning program that was downloaded from the HP Website.

    I can't help anymore beyond that I'm affraid... as I don't know the model of the notebook, or the battery for that matter.
    Christopher Baldrey

  5. #5
    Uranium Lounger viking33's Avatar
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    Re: Dead laptop batteries?

    It depends on the type of rechargeable battery. The older Ni-Cad's had a bad habit of developing "low voltage memory" That is, you could try to recharge them, but they would only charge up to the low point, never to a full charge. This was mostly due to recharging them too often, when the voltage drain was only a small amount of the total. The ideal way to recharge is to wait until they are down to a greater degree and then recharge. I used to recommend that most Ni-Cads be run almost completely down and then given a complete fresh charge. This will extend the useful life of the battery pack for a significant time.
    "Shocking or Blasting" the battery with a higher voltage for just a second or two ( no longer ) would generally remove the low voltage memory.
    The newer Lithium or oxide batteries do not exhibit this characteristic, so shocking them doesn't do much good. So if the pack is a fairly new type then replacement is the answer.

    Bob
    BOB
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    Long ago, there was a time when men cursed and beat on the ground with sticks. It was called witchcraft.
    Today it is called golf!

  6. #6
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    Re: Dead laptop batteries?

    Thanks.

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