Here goes my battery again!

Discussion in 'MacBook Pro' started by klymr, Sep 7, 2007.

  1. klymr macrumors 65816

    Joined:
    May 16, 2007
    Location:
    Utah
    #1
    Having problems with it not wanting to last very long. I'm getting less and less use outta it every time I use it. Time to recalibrate it and see if that helps. Here are some screen captures to show how bad it is.
     

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  2. thegrifman macrumors regular

    Joined:
    Nov 8, 2006
    Location:
    Kennesaw, GA
    #2
    Have you ever calibrated before today? I'm certainly not an authority on how long your battery should last but but I've got 26 Cycles on mine and it's still only at 96%. I have seen it where I calibrated and it went up a percent or two so hopefully that'll happen for you. At 10 Cycles mine was still at 100% Health.
     
  3. flopticalcube macrumors G4

    flopticalcube

    Joined:
    Sep 7, 2006
    Location:
    In the velcro closure of America's Hat
    #3
    I have had exactly the same experience. 10 cycles = 100%, 25 cycles = 97%
     
  4. klymr thread starter macrumors 65816

    Joined:
    May 16, 2007
    Location:
    Utah
    #4
    Last calibrated about a month ago when I got this new battery. The old one had the same problem. I was at about 27 cycles, it would only last about an hour or two just browsing the web, and so Apple sent me a new one. My health had dropped down to about 96% and slowly regained back up to 100% at that 27 cycles. I guess I'll kill this battery today and start a calibration. Wish me luck!
     
  5. john2006wright macrumors regular

    Joined:
    Jun 25, 2007
    Location:
    UK
    #5
    what constitutes a cycle? Is it best to use a macbook on battery then charge to full or just leave it charging all the time and then keep topping it up if you need to switch to battery for a bit.

    Thanks.
     
  6. flopticalcube macrumors G4

    flopticalcube

    Joined:
    Sep 7, 2006
    Location:
    In the velcro closure of America's Hat
    #6
    One full discharge/recharge is a cycle. Or 10 discharges to 90% and small recharges. Or any combination thereof. Lithium Ion batteries prefer shallow cycling (small discharge/recharge). www.batteryuniversity.com
     
  7. thegrifman macrumors regular

    Joined:
    Nov 8, 2006
    Location:
    Kennesaw, GA
    #7
    I don't know exactly how low you have to go to count as a cycle. I know I haven't gone below 50% and it's counted the next charge as a cycle. It's not necessarily best to use it on battery then charge, but if you have it plugged in most of the time you definitely want to calibrate it about once a month.

    http://docs.info.apple.com/article.html?artnum=86284
     
  8. aethelbert macrumors 601

    Joined:
    Jun 1, 2007
    Location:
    Chicago, IL, USA
    #8
    That's definitely not a very good battery. I've got 35 cycles on my macbook and I have over 100% capacity.
     
  9. Osarkon macrumors 68020

    Osarkon

    Joined:
    Aug 30, 2006
    Location:
    Wales
    #9
    How can you have over 100%? ;)

    I'm at 29 cycles with my new battery and it's still at 100% as well.
     
  10. jczubach macrumors 6502

    jczubach

    Joined:
    May 15, 2007
    Location:
    northwest
    #10
    how does 'over 100% capacity' show up on your computer?!!????:rolleyes:
     
  11. klymr thread starter macrumors 65816

    Joined:
    May 16, 2007
    Location:
    Utah
    #11
    When I shut it off at school after using it for about 30 minutes I was down to 59 minutes and 59% charge. I sure hope it's nothing serious with my computer. This is kinda scaring me!
     
  12. klymr thread starter macrumors 65816

    Joined:
    May 16, 2007
    Location:
    Utah
    #12
    So, here is another question. When calibrating, it says to leave it plugged in for at least 2 hours on a full charge and then to turn it on and disconnect the power and drain it. I had mine on a full charge overnight (Thursday to Friday) and it was asleep before I took it to school and started using it. I put it to sleep a few times throughout the day before draining it all the way last night.

    So, do you think I need to recharge it, let it sit for 2 hours, and then use it until it dies again all in one continuous go around? Please let me know!
     
  13. brewno macrumors 6502

    Joined:
    Jun 8, 2007
    Location:
    Montreal, Canada
    #13
    A little late to post this, but mine is at 47 cycles with 96% today. 97% yesterday... Hmm.
     
  14. nc7r macrumors member

    nc7r

    Joined:
    Feb 1, 2007
    #14
    Yeah, I checked mine and this is what it's showing:
    [​IMG]

    I've only had it for about 2 months now but I try to keep it charged when-ever I can just to keep the battery life up. As you can see 19 charges, 99% battery life.

    I'd definitely send it back!
     
  15. xcking07 macrumors newbie

    Joined:
    Sep 8, 2007
    #15
    So is my battery bad then. I have had my computer since June.
     

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  16. klymr thread starter macrumors 65816

    Joined:
    May 16, 2007
    Location:
    Utah
    #16
    I'd say both of those are ok. Recalibrate it and see what happens.

    I am at 10 cycles and down to 96% health with a battery lasting under 2 hours. This is ridiculous.
     
  17. lateralus1082 macrumors member

    Joined:
    Nov 11, 2006
  18. aquajet macrumors 68020

    Joined:
    Feb 12, 2005
    Location:
    VA
    #18
    What's the problem? I don't see anything wrong with those numbers.
     
  19. klymr thread starter macrumors 65816

    Joined:
    May 16, 2007
    Location:
    Utah
    #19
    Got mine back up to 99% with a 100% charge. I pulled the power adapter and let it sit for about a minute to calculate the remaining life. No apps open, screen brightness at the lowest possible setting (where the light is still on) and nothing else happening. It said I had 2:22 left. I still think I should have more life than that off a battery with 11 cycles on it. What do you think?
     
  20. jczubach macrumors 6502

    jczubach

    Joined:
    May 15, 2007
    Location:
    northwest
    #20
    a) What do your login items say? System preferences, accounts, log-in items. b) activity monitor/ active processes? c) have you ever been in a Turkish Prison? that is a Joke.:rolleyes:my bad!
     
  21. haiggy macrumors 65816

    Joined:
    Aug 20, 2003
    Location:
    Ontario, Canada
    #21
    Mine is at 27 cycles and 99% health..
    good thing though, 'cause my last iBook battery sucked!
     
  22. majordude macrumors 68020

    majordude

    Joined:
    Apr 28, 2007
    Location:
    Hootersville
    #22
    Hmmm. 94% and only 12 cycles?! :eek:

    I think I'll try to calibrate tonight.
     

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  23. klymr thread starter macrumors 65816

    Joined:
    May 16, 2007
    Location:
    Utah
    #23
    Here is the latest tonight. I'm draining it without turning it off this time. Let's see how it works out this time.
     

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  24. klymr thread starter macrumors 65816

    Joined:
    May 16, 2007
    Location:
    Utah
    #24
    Here is a new update. I've been running it for about 40 minutes so far surfing the web using wireless. I did a battery recalibrate again and then restarted it and let it sit with the power attached over the weekend. Seems to be doing much better now!
     

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