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    Laptop battery being plugged in?

    Discussion in 'Hardware Components and Aftermarket Upgrades' started by Clincher09, Sep 9, 2009.

  1. Clincher09

    Clincher09 Newbie

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    I just got a new laptop and I don't want to ruin my battery to quickly. I just leave it plugged in at home but I heard this could be bad for the long term life. What's the best way to prolong the batter life?
     
  2. sirmetman

    sirmetman Notebook Virtuoso

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    You can do what the crazy people do and take your battery out when unplugged and stick it in the freezer, then always discharge it to like 90% before recharging and sticking back in freezer, and never run pulgged in with bat unless charging... or you can live like the rest of us and deal with your battery dieing 3%-8% (no, I don't know for sure, but my point is small) faster but not obsessively worrying over battery life all the time and determining your usage patterns by the percentage of batt life you have left. :) Basically, I don't really think that with current technology, it's worth the effort to try and wring that last little bit out of your battery.

    Edit: Prepare for people to rip me apart for this... but I'm sticking by it.
     
  3. khalifas

    khalifas Notebook Enthusiast

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    Yes and No
    Yes:New batteries can be plugged when on AC even after charging completed.But
    No: if your lap is emitting a lot of heat then it would have a bad effect on it ,decreasing its capacity.
    Source: http://batterycare.bkspot.com/en/guide.html#retirarBat
    Also that tool (battery Care) is very useful.
     
  4. Krane

    Krane Notebook Prophet

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    No manufacturer would ever recommends putting the battery in the freezer. I'm not sure where a lame brain idea like that came from?
     
  5. Krane

    Krane Notebook Prophet

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    This is a grossly neglected area in computer technology that manufacturers should be ashamed to admit still exists.

    A simple microprocessor could monitor the charge and shut down the flow when the battery reaches full charge. Even in lieu of that, a simple switch (a lighted key) could be set so that the operator could toggle the charge cycle off when the batter is fully charged. The notion of still having to physically remove the battery is tantamount to unscrewing a light bulb to turn it off. In this day and time, this is simply ridiculous.
     
  6. Judicator

    Judicator Judged and found wanting.

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    Um, modern Li-ion batteries already have protective circuits that do that (cut the charging when the battery gets full), mainly because of the fact that if you overcharge them, they have a possibility of exploding. The main reason to remove a battery is to remove it from heat, which will hasten the loss of battery capacity.
     
  7. sirmetman

    sirmetman Notebook Virtuoso

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    Heat is the enemy. Lots of people freeze batteries of all kinds to try to extend shelf life. I think it's a waste, but I have known a number of people with baggies of AAs in the freezer.
     
  8. Krane

    Krane Notebook Prophet

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    It is a waste, and unecessary; and counter productive to a battery's operation.
    A legitimate explanation, but still a cumbersome and antiquated procedure. By now they ought to have come up with a better solution by now.
     
  9. sirmetman

    sirmetman Notebook Virtuoso

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    Never said any different.
     
  10. Judicator

    Judicator Judged and found wanting.

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    The problem appears to be a chemical one, really. Li-ion batteries lose permanent capacity from rising internal resistance due to oxidation and deposits in the electrolytes. This process is merely hastened by higher temperatures. That said, things have been improving, although the improvements may not always be immediately visible to some. My old Compaq Presario R3247US used to go through a battery a year (or less!). My Gateway NX860XL has been using the same battery since I got it (almost 3 years ago now) and it's only at 14% wear level. I was lucky to have that kind of wear level in the Compaq after 2 months. And personally, I never took the batteries out, just left them in the machine and the machine plugged in most of the time.
     
  11. Krane

    Krane Notebook Prophet

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    Our results may vary? :)