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  Re: Notebook batteries, not meant to last? 
 
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Archangel Jun 07, 2009, 04:01pm EDT Reply - Quote - Report Abuse
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>> Re: Re: Notebook batteries, not meant to last?
Ohhh man, sad sad ... tsk tsk....

Sander, out of all your repliers to your last column... which was over 4 months ago... ( pretty good ratio, 3 articles a year )

only McFly and maybe someone else is a senior member of this forum. I guess i count as one of the top posters now... haha.


What happened with this cool forum ?

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steve s Feb 27, 2010, 08:32am EST Reply - Quote - Report Abuse
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>> Re: Re: Notebook batteries, not meant to last?
You should not fully charge Li-Ion batteries if you intend to keep them in a drawer - You should only charge them to 40% for longest life.
Also, you should store them at 5 deg Centigrade (or as low temp as possible).
You should also top them up every few months. If the batteries discharge below a certain voltage then the Smart controller will not charge them up again as it thinks they are too 'old' and degraded and may explode.
Batteries that are in constant use do not self-disharge below this threshold as the user tops them up again. Hence ones kept in a drawer (and fully charged) will go 'bad' faster.
You can buy a special charger (e.g. Cadex) which will 'boost' or trickle-charge these 'dead' batteries. Once they are charged up to the threshold that the Smart controller recognises as 'good', you can charge them up in a notebook as normal.

steve s Feb 27, 2010, 12:33pm EST Reply - Quote - Report Abuse
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>> Re: Re: Notebook batteries, not meant to last?
P.S. some laptops now have a Q Charge button. You can set the Power regime to only charge the battery to 50% or 75% capacity. This is intended to be used by people who mainly use the laptop on the mains and thus it increases the battery life. If you do need to fully charge the battery because you intend to use it on the battery for a long time, you just press the Q Charge button to quickly charge the battery to 100%.
So manufacturers obviously know that using the laptop on the mains for extended periods does greatly reduce batttery life!

The problem is people tend to want the battery to last for as many hours as possible, which means all manufacturers try to charge up the battery to 100%.

Jim DuB Jan 16, 2011, 07:22pm EST Reply - Quote - Report Abuse
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Edited: Jan 16, 2011, 07:24pm EST

 
>> Re: Re: Notebook batteries, not meant to last?
Sander,
The industry has the technology to make a notebook battery last about 5 years.... and at the 100.00 dollar price point... that can be done at a super great profit for each handler in the supply chain. The issue is that your actual supplier has NO CLUE about the quality of the product that they are passing on to you.... all they know is that they are charged 60 dollars and that they can charge you 100 dollars (and "free" shipping). So, it is like buying a "pig in a poke". You should anticipate that the battery will not last longer than the stated warranty. IF it is stated as "1 year" than you are being warned that it will cost you 100 dollars a year to keep a functional battery. Longer warranties are well worth an extra 5 or 10 %..
Good luck - you pays your money and you takes your chances.
Kinda like a lottery -
-Jim


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