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Thread: someone told this about laptop batteries

  1. #1
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    someone told this about laptop batteries

    That if you are not using the battery just remove it when you are running off AC power because it can damage the battery? Is this true? I have never heard this before, (and have a new 12 cell battery on the way for my laptop..)

  2. #2
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    Re: someone told this about laptop batteries

    Li Ion batteries have life cycles. Meaning every charge and discharge is a cycle. When the battery is in it is always charging. When the pc is off it discharges. Turn the computer back on and it charges again. This burns through cycles and reduces the life of the battery. Mine lays on the floor most of the time.

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    Re: someone told this about laptop batteries

    If you are running on AC power with the battery removed, be prepared to lose data if the power supply accidentally disconnects.

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    Re: someone told this about laptop batteries

    We use Lenovo laptops, and have them all set to not charge the battery unless it falls below 80% to avoid this.

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    Re: someone told this about laptop batteries

    Lithium batteries are sensitive to heat, so if your laptops are constantly powered on and running on AC power, the amount of heat generated nearby the battery could negatively impact its lifespan.
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    Re: someone told this about laptop batteries

    I haven't really noticed any major reduction in battery life on my netbook from leaving the battery in all the time. I'm usually running it off AC power too.
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    Re: someone told this about laptop batteries

    Thats very interesting to hear..... So if this is the case is there a way or an option in Ubuntu to disable the charging in Ubuntu unless you actually want the battery to charge?

  8. #8
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    Re: someone told this about laptop batteries

    I've heard of it. I think it makes sense.

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    Re: someone told this about laptop batteries

    Quote Originally Posted by cptrohn View Post
    That if you are not using the battery just remove it when you are running off AC power because it can damage the battery? Is this true? I have never heard this before, (and have a new 12 cell battery on the way for my laptop..)
    That might have been true of old laptops with lousy charge controllers.

    If the laptop is on AC, it shouldn't be in a constant charge/discharge cycle.

    My latest HP has been run almost entirely off of AC for the past 3 years. I've noticed no appreciable degradation in battery life. My Compaq from roughly a year before that was frequently subjected to a charge then deep discharge cycle, and the battery's life was appreciably cut short.

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    Re: someone told this about laptop batteries

    My previous laptop (one of the Toshiba A100 range) was run off mains most of the time, and the battery didn't last too well. By the time I gave it to my nephew, the battery would only last about 5 minutes. My current laptop (also from Toshiba) seems to have a longer battery life. Something has changed but I haven't bothered looking into it much.
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