Balancing battery and power supply on laptop

Discussion in 'Laptops and Netbooks' started by sakumar79, Apr 14, 2006.

Thread Status:
Not open for further replies.
  1. sakumar79

    sakumar79 Active Member

    Joined:
    Nov 28, 2004
    Messages:
    2,441
    Likes Received:
    9
    Trophy Points:
    38
    Location:
    Madurai
    Hi
    I have a laptop which I use to carry work between office and home... Since I mostly use it at home and office and not while carrying it around, most often I am able to use a power supply to avoid battery getting drained...
    However, recently a computer technician told me that if I dont use the battery at all and use power supply to work on the laptop all the time, the battery will drain and start losing its capacity... Is this true? If so, when I use battery, is there a particular level to which I should allow it to drain before connecting it to the power supply (to maximise battery life)?

    Thanks in advance
    Arun
     
  2. Yamaraj

    Yamaraj The Lord of Death

    Joined:
    May 11, 2005
    Messages:
    253
    Likes Received:
    5
    Trophy Points:
    0
    Location:
    यमलोक
    Your computer tech person is right to some extent. Li-ION batteries are prone
    to failure at severely low discharge levels. Usually, it's better to set the charge
    threshold to 60%-80% (min-max), if you're always near a power socket.
    This will force the battery to start charging only when below 60% and stop
    when at 80%. Remember, you should never let Li-ION batteries idle at very
    low or very high charge levels. So, keeping a max of 80% charge level is
    optimal for you, since you don't make use of the battery quite often.

    You may want to take the battey out and store in a refridgerator at 40%
    charge level, when not in use for a long time. But I advise otherwise.

    Li-ION batteries also like small charge increments or decrements. Draining them
    from 90% to like 15% is certainly not a good idea. This way, you also loose
    charge cycles faster, thus resulting in low overall lifespan of the battery.

    For more information on batteries: http://batteryuniversity.com/index.htm

    HTH,
    Yamaraj
     
    Last edited: May 10, 2006
  3. montsa007

    montsa007 ~Bulletproof Monk~

    Joined:
    Nov 9, 2004
    Messages:
    1,180
    Likes Received:
    5
    Trophy Points:
    0
    Location:
    Mumbai
    recharge the batteries only when the warning flashes i mean it should be 10-20% left
    depends on pc to pc
    in my dell i get it @ 14%
     
  4. Yamaraj

    Yamaraj The Lord of Death

    Joined:
    May 11, 2005
    Messages:
    253
    Likes Received:
    5
    Trophy Points:
    0
    Location:
    यमलोक
    That's hazardous for Li-ION batteries. Never let them discharge at warning
    levels. I'm afraid to say that your charging practice is silently killing your battery.

    BTW, can you tell me how old your Dell is and how many charge cycles has
    the battery consumed yet?

    My ThinkPad was purchased back in December, and only 6 cycles have been
    consumed by the battery so far. I'm sure it'll last longer than expected.
     
  5. montsa007

    montsa007 ~Bulletproof Monk~

    Joined:
    Nov 9, 2004
    Messages:
    1,180
    Likes Received:
    5
    Trophy Points:
    0
    Location:
    Mumbai
    no i just recharged this way 1nce else am a 50 50 user 50% use 50% charge
     
  6. Akshay

    Akshay Active Member

    Joined:
    Aug 15, 2004
    Messages:
    1,121
    Likes Received:
    9
    Trophy Points:
    38
    Location:
    Pune
    Very useful information yamaraj...

    But I didnt understand what do u mean by "how many charge cycles has
    the battery consumed yet?"
     
Thread Status:
Not open for further replies.

Share This Page