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strange battery behavior ?

Discussion in 'Notebooks' started by jh, May 7, 2010.

  1. jh

    jh Flightless Bird

    Hello

    I have a HP 530 laptop, to which i got a new battery.
    The old was a 2000mAh HP-original but this new is a 4600mAh battery.

    Im using ubuntu and when I look at /proc/acpi/battery/../info
    it tells me i still have 2000mAh battery. Updatin bios didnt help.

    Anyone ever heard of any such thing ? HP-support could not help

    Jarkko
     
  2. Linea Recta

    Linea Recta Flightless Bird

    "jh" <jarkko.harma@surffi.net> schreef in bericht
    news:4be43edc$0$2531$4b86bf46@news.surffi.net...
    > Hello
    >
    > I have a HP 530 laptop, to which i got a new battery.
    > The old was a 2000mAh HP-original but this new is a 4600mAh battery.
    >
    > Im using ubuntu and when I look at /proc/acpi/battery/../info
    > it tells me i still have 2000mAh battery. Updatin bios didnt help.
    >
    > Anyone ever heard of any such thing ? HP-support could not help
    >



    If it is really 4600mAh battery, I suppose it takes longer to become fully
    charged.



    --
    regards,

    |\ /|
    | \/ |@rk
    \../
    \/os
     
  3. BillW50

    BillW50 Flightless Bird

    In news:4be43edc$0$2531$4b86bf46@news.surffi.net,
    jh typed on Fri, 07 May 2010 19:24:43 +0300:
    > Hello
    >
    > I have a HP 530 laptop, to which i got a new battery.
    > The old was a 2000mAh HP-original but this new is a 4600mAh battery.
    >
    > Im using ubuntu and when I look at /proc/acpi/battery/../info
    > it tells me i still have 2000mAh battery. Updatin bios didnt help.
    >
    > Anyone ever heard of any such thing ? HP-support could not help
    >
    > Jarkko


    Hello Jarkko! This new battery, is it manufactured by HP or some clone?
    Or was this an original and the internal batteries have been replaced?

    The reason why I ask is because as far as I know, laptops have no idea
    what the capacity of a battery is. The only way a laptop could figure it
    out is by calibrating. There are different methods of doing this. But
    they all test the battery while fully charged and test how long they run
    before the battery is depleted (using different methods). So it learns
    from the battery you are using and they generally work pretty well.

    Problem comes in when you also have more than one battery. Now the
    calibration is all off. As the capacity of the battery is most likely
    different (even if the capacity of two batteries are supposed to be the
    same). Battery manufactures came up with a solution to this problem by
    having a chip inside to report details on the battery. One of them is a
    serial number of the battery. So the laptop knows this isn't the same
    battery as before. Thus the laptop needs to use a different calibration
    for this other battery.

    So Ubuntu is reading information from this chip. And the information
    sounds like it is a clone of the information from the original battery.
    Thus it reports the capacity is the same as the old one. And that
    wouldn't surprise me, since a lot of battery manufactures don't always
    put very accurate information into the chip. Especially clone
    manufactures. So I would depend on the laptop's ability to calibrate the
    battery instead of using the information that the battery supplies.

    --
    Bill
    Gateway M465e ('06 era) - Windows XP SP3
     
  4. JBJ

    JBJ Flightless Bird

    "BillW50" <BillW50@aol.kom> skrev i meddelelsen
    news:hs3rto$4sv$1@news.eternal-september.org...
    > In news:4be43edc$0$2531$4b86bf46@news.surffi.net,
    > jh typed on Fri, 07 May 2010 19:24:43 +0300:
    >> Hello
    >>
    >> I have a HP 530 laptop, to which i got a new battery.
    >> The old was a 2000mAh HP-original but this new is a 4600mAh battery.
    >>
    >> Im using ubuntu and when I look at /proc/acpi/battery/../info
    >> it tells me i still have 2000mAh battery. Updatin bios didnt help.
    >>
    >> Anyone ever heard of any such thing ? HP-support could not help
    >>
    >> Jarkko

    >
    > Hello Jarkko! This new battery, is it manufactured by HP or some clone?
    > Or was this an original and the internal batteries have been replaced?
    >
    > The reason why I ask is because as far as I know, laptops have no idea
    > what the capacity of a battery is. The only way a laptop could figure it
    > out is by calibrating. There are different methods of doing this. But
    > they all test the battery while fully charged and test how long they run
    > before the battery is depleted (using different methods). So it learns
    > from the battery you are using and they generally work pretty well.
    >
    > Problem comes in when you also have more than one battery. Now the
    > calibration is all off. As the capacity of the battery is most likely
    > different (even if the capacity of two batteries are supposed to be the
    > same). Battery manufactures came up with a solution to this problem by
    > having a chip inside to report details on the battery. One of them is a
    > serial number of the battery. So the laptop knows this isn't the same
    > battery as before. Thus the laptop needs to use a different calibration
    > for this other battery.
    >
    > So Ubuntu is reading information from this chip. And the information
    > sounds like it is a clone of the information from the original battery.
    > Thus it reports the capacity is the same as the old one. And that
    > wouldn't surprise me, since a lot of battery manufactures don't always
    > put very accurate information into the chip. Especially clone
    > manufactures. So I would depend on the laptop's ability to calibrate the
    > battery instead of using the information that the battery supplies.
    >
    > --
    > Bill
    > Gateway M465e ('06 era) - Windows XP SP3
    >
    >



    It could be Ubuntu is screwed up and it still detecting your new battery as
    the old one.
    Try booting with a liveCD to see if that detects your battery correctly.

    --

    ------------------------------------------

    Med venlig hilsen / With kind regards

    Jan Johansson
     

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