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    Calerbrating battery

    Discussion in 'Hardware Components and Aftermarket Upgrades' started by 4fingers97, Mar 14, 2009.

  1. 4fingers97

    4fingers97 Notebook Evangelist

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    Ok today I started to calerbrate my battery and I was wondering. My laptop goes down to like 4% and then it shuts off. It there a way to make it shutoff only when it has 0% left? Because I Want to calerbrate it properly.
     
  2. 4fingers97

    4fingers97 Notebook Evangelist

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    Can anyone help?
     
  3. targetpi

    targetpi Newbie

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    I think if it goes down below 4% it will die completely. So that might be a built in fail safe so you don't end up killing the battery.
     
  4. 4fingers97

    4fingers97 Notebook Evangelist

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    SOmeone help me! I need help! My laptop goes to like 3% then it just shuts down. It wont go down to 0. I dont know if I calerbrated it
     
  5. K-TRON

    K-TRON Hi, I'm Jimmy Diesel ^_^

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    It is not important to go down to 0%, it really does not make any difference if you are already getting down to 3%. What really kills the battery is heat.
    If you drain the battery completely, you are pulling power from it causing the battery to get hot. Then you just plug the battery in, and charging it makes the battery get even hotter. This is what kills the batteries.
    Make sure to unplug the battery after you discharge it, and let it cool before you charge it back up again.

    K-TRON
     
  6. 4fingers97

    4fingers97 Notebook Evangelist

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    So Did I calerbrate it? Is there a guide on how to calibrate a battery?
     
  7. FrankTabletuser

    FrankTabletuser Notebook Evangelist

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    In the windows power settings you can change the actions and even disable the actions and alarms Windows shall perform when the battery gets low. This way you can drain the battery completely. The notebook will 'crash' then and shut off completely.
    After this, remove the battery and let the battery and notebook cool down for maybe 15 minutes (don't keep the battery too long in such a deep discharge state), then install it in your notebook again and connect the power plug. To reduce the heat keep your notebook turned off while charging, which will take a while, maybe 1 to 3 hours or more.
    That's all you can do to calibrate your battery.
    You also only have to do this if something is not properly working with your battery or if you think that the computer isn't able to calculate the right capacity.
     
  8. Tinderbox (UK)

    Tinderbox (UK) BAKED BEAN KING

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    Just boot in to the bios and leave the notebook till it turns itself off.
     
  9. 4fingers97

    4fingers97 Notebook Evangelist

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    Well this si what happended. Its was 3% and my laptop just went dark and then shutoff. Then I plugged it into a charger and let it charge but I unpluuged it 1-2 times. Is that ok? Does that count a a calibration?
     
  10. nizzy1115

    nizzy1115 Notebook Prophet

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    Do you really need to calibrate modern batteries? I mean they are smart arent they?
     
  11. Tinderbox (UK)

    Tinderbox (UK) BAKED BEAN KING

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    But they dont say smart as what! :)

     
  12. FrankTabletuser

    FrankTabletuser Notebook Evangelist

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    no

    the calibration thing is not really needed.
    The charger does not charge the battery because of a predefined capacity, it charges it until the battery is full, which is determinable on the basis of several measurements while charging (tiny voltage drop, ...).
    The only thing is that while you use the battery it calculates the capacity the battery has the whole time. This calculated capacity value can get wrong over the time and thus the remaining capacity can shsow wrong values (maybe +-1% :D ) so you can discharge the battery and fully load it to allow the microcontroller to get and show you the proper capacity again.
    This won't increase the capacity the battery has, it just shows you 'correct' numbers again.

    What you describe is used if the battery is new. A new battery gets its full capacity not until a few charges. But you don't really have to fully discharge and charge it several times, that's already done when you use the battery normally, it reaches it full capacity just not as fast then.
     
  13. 4fingers97

    4fingers97 Notebook Evangelist

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    SO its not nessacary to calibrate it every month?
     
  14. FrankTabletuser

    FrankTabletuser Notebook Evangelist

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    No, for God's sake!

    Maybe once in a year, if you think that your battery life acts strange then you can try to calibrate it to reset the capacity estimation.
     
  15. 4fingers97

    4fingers97 Notebook Evangelist

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    ok thx because someone told me should calerbrate it once a month
     
  16. nizzy1115

    nizzy1115 Notebook Prophet

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    Perhaps you shouldnt listen to that person about computer things anymore. They are about 15 years in the past ;)
     
  17. 4fingers97

    4fingers97 Notebook Evangelist

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    Lol. so lithum Ion batterys dont need to be calerbrated that much. Only old ones right?
     
  18. FrankTabletuser

    FrankTabletuser Notebook Evangelist

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    Li-Ion batteries don't need to be calibrated at all.
    With the above mentioned calibrating you don't calibrate the battery, only the charging controller to give you real capacity values again.
     
  19. 4fingers97

    4fingers97 Notebook Evangelist

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    Ok thank you guys
     
  20. maiki

    maiki Notebook Evangelist

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    What do you mean by "calerbrate"? (Seeing that word repeatedly by the poster, it doesn't look like a typo.)
     
  21. sublime313

    sublime313 Notebook Evangelist

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    My mom said if you do it too mucH it'll make you go blind
     
  22. 4fingers97

    4fingers97 Notebook Evangelist

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    its was a typo but I used to think it was spelt like that no like calibrate
     
  23. maiki

    maiki Notebook Evangelist

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    Well, if you thought it was spelled that way (notice "spelled", not "spelt"), it wasn't a typo. Typo means your fingers accidentally hit the wrong key on the keyboard. When a word is misspelled repeatedly the same way, it could not be a mistake of the fingers (even with only four).

    "Calerbrate" not only is spelled differently than "calibrate", it would sound differently to speak. Where did you hear someone speak it like that?

    Did you mean "not like calibrate"? (Notice "not" rather than "no".)

    Hey 4 fingers, by any chance, is your name............

    George W. Bush? :D (Do you also say "nukular"?) :D

    (just kidding)