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How to re-calibrate your Laptop Battery?

Discussion in 'Tech, Gadgets & Science Forum' started by sijui nini, Apr 16, 2012.

  1. sijui nini

    sijui nini JF-Expert Member

    #1
    Apr 16, 2012
    Joined: Sep 29, 2010
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    It is difficult to predict how long a laptop battery charge will last because each computer user has different habits and needs. The rate at which you use laptop battery power will determine how long you can use the battery of your laptop. You can re-calibrate your laptop battery if the battery's life has gotten shorter over time. Your laptop battery might need a good calibration if it doesn't seem to be getting the mileage that it should. How to re-calibrate laptop battery? The following paragraphs will give you the answer.


    First put the laptop computer to sleep by turning off the screensaver and other power management settings of the computer. Then fully charge the computer and allow it to run all the way down until the computer shuts off automatically. Once the laptop battery has fully drained, charge it back up again and restore the screensaver and power management settings.


    Re-calibrate your battery every month or so by fully charging, fully discharging, and then fully charging again. Basically to have a chance to re-calibrate your laptop battery is to turn off all power-saving features completely and then fully recharge them. If it doesn't work for the first time then try two more full discharges and recharges.


    The above way of re-calibrating the laptop batteries works well with laptops using Ni-MH cells. But not with laptops using Li-Ion batteries because deep discharges will actually decrease the charge capacity and lifespan of Li-Ion cells. Moreover Li-ion batteries irreversibly lose approximately 20% capacity per year from the time of manufacture at a typical 100% charge level at 25deg.C, even when unused. Li-ion batteries irreversibly lose approximately 2%, 4%, 15% at 0deg.C, 25deg.C and 40deg.C respectively, when stored at 40% charge level. That is every deep discharge cycle decreases the capacity of the Li-ion batteries. As the Li-Ion batteries are chemical in nature, charging and recharging is not going to fix the problem once the chemical reactions stop happening. Therefore the best advice for re-calibrating the Li-Ion batteries is to store the battery at 40% charge if it kept unused for any unlimited period of time. Also don't leave the battery in the laptop if you don’t use the battery or if you plug the laptop into outlet power.


    You can also re-calibrate your laptop battery using IBM Thinkpad Battery Maximizer in order to maximize your laptop battery’s life. If your laptop has IBM ThinkPad Battery MaxiMiser and Power Management features installed, you can verify the condition of the laptop battery. You can check the status of your battery using the Battery MaxiMiser Gauge in the taskbar tray. The ThinkPad's Lithium Ion battery pack that seems to be an intelligent battery uses a microprocessor to monitor its capacity. Then the microprocessor of the battery pack passes the information about the remaining battery capacity to the laptop. The laptop indicates the capacity with high accuracy.


    Using the HP Laptop Battery Learning Utility, a modified version of a Win98 boot floppy, can also help you. Just place it in the floppy drive, and then turn on the computer. The re-calibration process is automated and takes about six hours to finish. This utility is available in different versions for different models. You can run the utility every two months.


    If the laptop battery is still bad then it must have developed a memory that cannot be erased easily. If calibration doesn't help, then it is the right time to purchase another battery.


    SOURCE: Re-calibrate Laptop Battery Laptop Batteries Lapto
     
  2. hekimatele

    hekimatele JF-Expert Member

    #2
    Feb 10, 2014
    Joined: May 31, 2011
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    My question is
    I was told once before that if you want to make your battery stronger and last longer you need to use it off charge most of the time. Wanamaanisha yaani ikishajaa battery usiiache iendelee kukaa on the power all the time. Chomoa charger na kisha utumie then ikiisha unachomeka tena.
    Is this the right approach every time?
    cc; snochet
     
    Last edited by a moderator: Jan 4, 2016
  3. snipa

    snipa JF-Expert Member

    #3
    Feb 10, 2014
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    Whats the hell kaka?
    .
    Unatoa reply post za 2012 hah?
    .
     
    Last edited by a moderator: Jan 4, 2016
  4. Gibeath-Elohimu

    Gibeath-Elohimu Senior Member

    #4
    Feb 10, 2014
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    Japokua post niya mwaka 2012,but hii haizuii kucomment swali lako.Kaka mpango mzima ndo hivo pc yako ikijaa toa kwenye umeme ikiisha recharge.Mie ndo ninavyofanya na battery iko poa.so u just kp on doing the same!
     
    Last edited by a moderator: Jan 4, 2016
  5. hekimatele

    hekimatele JF-Expert Member

    #5
    Feb 10, 2014
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    Hakuna hell hapa.
    Nimewasiliana na mdau hapo juu haijalishi post ni ya mwaka gani.
    Tatizo ni lile lile.
    Kama inakuhusu unajibu ila kama haikuhusu pita bara bara ya Mandela sio lazima upite Ali Hassan mwinyi
     
  6. snipa

    snipa JF-Expert Member

    #6
    Feb 10, 2014
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    Uta ua battery lako i promise you!!
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    Be aware atm
    .
     
  7. ymollel

    ymollel JF-Expert Member

    #7
    Feb 10, 2014
    Joined: Aug 23, 2012
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    Li-ion battery hazihitaji Re-calibration mara kwa maraisipokuwa mara ya kwanza kutumia lazima uifanyie training. microcontroller na mfumo mzima wa Li-Ion unajimudu wenyewe so unaweza kufanya re calibration ingawa sio lazima.

    zipo battery zinazohitaji sana recalibration.
    1. NiCd (Nickel cadmium)
    2.NiMH (Nickel metalHydride)
     
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