The Notebook Review forums were hosted by TechTarget, who shut down them down on January 31, 2022. This static read-only archive was pulled by NBR forum users between January 20 and January 31, 2022, in an effort to make sure that the valuable technical information that had been posted on the forums is preserved. For current discussions, many NBR forum users moved over to NotebookTalk.net after the shutdown.
Problems? See this thread at archive.org.

    Fully charged capacity is around 40% lower then designed capacity!

    Discussion in 'Accessories' started by Asmani11, Sep 11, 2011.

  1. Asmani11

    Asmani11 Newbie

    Reputations:
    0
    Messages:
    5
    Likes Received:
    0
    Trophy Points:
    5
    Hello!

    I have a problem with my laptop battery. Recently I noticed that my laptop can last a loot shorter on battery, around 1h 15min instead of 2h like usually. At first I thought it was something wrong with my power settings but after checking that up, I noticed in Everest that my Fully charged capacity of my battery is around 40% lower then designed capacity!

    Is there any reason to that or can I do something to make it last 2h again? I want to add that such thing (with lowering my battery capacity) happen over couple of days, so it was quite rapid.

    [​IMG]
     
    Asmani11, Sep 11, 2011
    #1
  2. goofball

    goofball Notebook Deity

    Reputations:
    358
    Messages:
    1,710
    Likes Received:
    0
    Trophy Points:
    55
    You could see if your laptop has a battery conditioning program, like Lenovo battery maintenance setup. Otherwise, not much you can do, cell's lose their ability to hold charges both as a result of use and time (and heat).
     
    goofball, Sep 11, 2011
    #2
  3. Asmani11

    Asmani11 Newbie

    Reputations:
    0
    Messages:
    5
    Likes Received:
    0
    Trophy Points:
    5
    It doesnt have any that kind of software.

    But it can happen so suddenly?
     
    Asmani11, Sep 11, 2011
    #3
  4. KLF

    KLF NBR Super Modernator Super Moderator

    Reputations:
    2,844
    Messages:
    2,736
    Likes Received:
    899
    Trophy Points:
    131
    When my tc4400 original battery died, individual cells died one after another in couple weeks time. I could see it when I looked at the capacity, some day I just had one cell worth of capacity less than day before that.

    I went and bought a new battery from some asian seller in eBay. It wasn't original but working one and actually really cheap compared to those available here.
     
    KLF, Sep 11, 2011
    #4
  5. hockeymass

    hockeymass that one guy

    Reputations:
    1,450
    Messages:
    3,669
    Likes Received:
    85
    Trophy Points:
    116
    How old is the battery?
     
    hockeymass, Sep 11, 2011
    #5
  6. goofball

    goofball Notebook Deity

    Reputations:
    358
    Messages:
    1,710
    Likes Received:
    0
    Trophy Points:
    55
    It can be gradual or it can be quick, depending on how many cells are in your battery and the way they are degrading. With 2hrs of battery life, and if it's a 3cell battery, only one has to die for you to lose 33% capacity.
     
    goofball, Sep 11, 2011
    #6
  7. Krane

    Krane Notebook Prophet

    Reputations:
    706
    Messages:
    4,653
    Likes Received:
    108
    Trophy Points:
    131
    There's really not enough information to make a call here. It could be a defect in workmanship or it could be that you decreased the battery's life through poor handling. There's just no way to be sure.
    Exactly. It could just be at the end of it's life.
     
    Krane, Sep 11, 2011
    #7
  8. Asmani11

    Asmani11 Newbie

    Reputations:
    0
    Messages:
    5
    Likes Received:
    0
    Trophy Points:
    5

    It is as old as laptop - around 2 years.

    I see....




    New batteries have some kind of 'chip' on them right? Maybe that chip is wrong? Is there any way to reset it?
     
    Asmani11, Sep 12, 2011
    #8
  9. lee_what2004

    lee_what2004 Wee...

    Reputations:
    822
    Messages:
    1,137
    Likes Received:
    14
    Trophy Points:
    56
    Most you can do is to calibrate the battery, by using it until 0% and charge it back to 100% and check the wear level again.
     
    lee_what2004, Sep 12, 2011
    #9
  10. Asmani11

    Asmani11 Newbie

    Reputations:
    0
    Messages:
    5
    Likes Received:
    0
    Trophy Points:
    5

    I already did that, it didnt helped.
     
    Asmani11, Sep 12, 2011
    #10
  11. katalin_2003

    katalin_2003 NBR Spectre Super Moderator

    Reputations:
    14,963
    Messages:
    5,671
    Likes Received:
    1,521
    Trophy Points:
    331
    Install CPU ID Hwmonitor and with the battery plugged, it should show you the battery wear percentage ;)
     
    katalin_2003, Sep 12, 2011
    #11
  12. flipfire

    flipfire Moderately Boss

    Reputations:
    6,156
    Messages:
    11,214
    Likes Received:
    68
    Trophy Points:
    466
    40% battery wear over 2 years is about right.

    Best you can do is cycle the battery. Discharge the battery near 0% and charging it back up to 100%, do this a few times.
     
    flipfire, Sep 12, 2011
    #12
  13. Asmani11

    Asmani11 Newbie

    Reputations:
    0
    Messages:
    5
    Likes Received:
    0
    Trophy Points:
    5

    I already did similar thing in Everest.

    Ok, I will try to do that.
     
    Asmani11, Sep 12, 2011
    #13
  14. 3demons

    3demons Battlefield 3 Ace

    Reputations:
    305
    Messages:
    596
    Likes Received:
    0
    Trophy Points:
    30
    time to buy a replacement battery...
     
    3demons, Sep 12, 2011
    #14