How Many Cycles Does a MacBook Battery Last

Discussion in 'MacBook Pro' started by bobber205, Aug 13, 2006.

  1. macrumors 68020

    bobber205

    Joined:
    Nov 15, 2005
    Location:
    Oregon
    #1
    When should I expect to replace my macbook battery. I would say 2/3 the time I use my machine (on almost all the time) it's from the adapter. But when I use the battery for power, I usually use the machine until the battery is more than 50% gone.

    Right now my iStat says me battery has "41 Cycles". How many will/should it last? How much should I expect to replace it?
     
  2. macrumors 603

    gauchogolfer

    Joined:
    Jan 28, 2005
    Location:
    American Riviera
    #2
    I'm using a 15" powerbook that has gone through 288 cycles and is at 92% of its original capacity after 18 months. You can keep an eye on things with coconut battery if you're worried about it. It's a nice little app. I'd say you've got a lot of life in your battery, yet.
     
  3. macrumors G4

    Mord

    Joined:
    Aug 24, 2003
    Location:
    Old York
    #3
    i've done over 100 cycles and it's still as good as new.
     
  4. thread starter macrumors 68020

    bobber205

    Joined:
    Nov 15, 2005
    Location:
    Oregon
  5. macrumors 6502a

    Clydefrog

    Joined:
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    Location:
    Pittsburgh,PA
  6. macrumors 6502a

    bbrosemer

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    Jan 28, 2006
  7. macrumors P6

    twoodcc

    Joined:
    Feb 3, 2005
    Location:
    Right side of wrong
  8. macrumors 6502a

    drake

    Joined:
    Jul 5, 2005
    #8
    Mine's 94% after five. Man, I'm getting ticked. I never had over 5000mAhs on my Macbook, and everyones seems to be higher. YET, I can get nearly four hours before it dies. Something wrong with the sensor?
     
  9. macrumors regular

    Joined:
    Jul 17, 2006
    #9
    As long as you do your monthly calibration you should be fine!
     
  10. macrumors 6502

    Joined:
    Apr 29, 2004
    Location:
    Auckland, New Zealand
    #10
    1gHz Ti-Book..

    82 percent of the original Capacity.
    Original 4200 mAh
    Current 3480 mAh

    Loadcycles 871 !!
    Age of mac 44 months.


    Guess I'm doing ok :D
     
  11. macrumors 6502a

    drake

    Joined:
    Jul 5, 2005
    #11
    Doesn't work for me.
     
  12. macrumors P6

    twoodcc

    Joined:
    Feb 3, 2005
    Location:
    Right side of wrong
    #12
    apparently me either:(
     
  13. macrumors regular

    Joined:
    Jun 12, 2004
    Location:
    Grinnell
    #13
    Listen to this peeps. 20 Cycles: 29% 1462 mAh.

    Needless to say I have a new MacBook battery in the mail.
     
  14. macrumors 65816

    furious

    Joined:
    Aug 7, 2006
    Location:
    Australia
    #14

    hot do you find out the info?

    ps i am a n00b when it comes to laptops
     
  15. macrumors P6

    twoodcc

    Joined:
    Feb 3, 2005
    Location:
    Right side of wrong
    #15
    download and run an application called "coconutbattery" and it tells you everything
     
  16. macrumors G4

    skunk

    Joined:
    Jun 29, 2002
    Location:
    Republic of Ukistan
    #16
    Mine is down to 75% after 148 cycles and 16 months. Should I be asking questions?
     
  17. macrumors regular

    bbergie

    Joined:
    Jul 3, 2006
    Location:
    Calgary
    #17
    My powerbook is at 70 months and well into its second battery. I guess you are doing ok. Go Titanium!

    For the record:
    Battery health: 76%
    Current: 3220 mAh
    Original: 4200 mAh
    136 loadcycles
     
  18. macrumors newbie

    Joined:
    Aug 19, 2006
    #18
    Thats about what mine is at too and I think its just normal heavy battery usage. I get about 3hrs still on the 15" MBP.
     
  19. macrumors regular

    Joined:
    Jul 4, 2007
    #19
    mine is about 5 months old, only 4 cycles (and i use it on battery ALL the time), and i am actually at 5321mAh, more than the original 5200. I think part of it is that almost every time I unplug it, i don't plug it back in until it puts itsself to sleep. and every 2 weeks or so, i disable hibernation with insomniax and let it die completely. make sure that whenever u discharge, let it get as low as you can whenever possible, and when u recharge, charge it up to 100 percent. everytime i do this, the capacity creeps up a bit. I did this with my 5 year old compaq and still am getting 80% life out of the original battery.
     

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  20. macrumors member

    Joined:
    Dec 11, 2007
    Location:
    los angeles
    #20
    is over-calibration is harmful?

    When my battery dies, I plug it in and charge it, use it until the battery dies, and this process goes on forever.....

    is this considered "calibrating" my battery? If so, is this bad since I run out of battery every day or two; hence, im calibrating my battery every other day instead of once a month?

    Apple says calibrating your battery requires you to leave it without power for 5 hours. Does this mean what I am doing is not harmful to my battery?
     
  21. macrumors 6502a

    Joined:
    Oct 22, 2007
    Location:
    Indy, IN
    #21
    According to the pic you attached, your charger is not connected yet your battery is charging. How is this possible?
     
  22. macrumors regular

    Joined:
    Nov 12, 2007
  23. tip
    macrumors 6502

    tip

    Joined:
    Mar 9, 2006
    #23
    Coconut battery produces incorrect stats in Leopard.

    Better to use Battery Health Monitor, or simply go to System Profiler -> Hardware -> Power.

    According to Apple, a well-maintained battery should retain 80% capacity at 300 cycles (it's noted in a document on the Apple support site).


    A few weeks ago, my battery was reporting 54% capacity at 300 cycles exactly. Went to an Apple store, and got a new one without problem (they used System Profiler). Heck, they didn't take my serial # or other information.

    Hope this info helps.
     
  24. macrumors 68000

    hulugu

    Joined:
    Aug 13, 2003
    Location:
    the faraway towns
    #24
    You know, mine seems to be steadily declining. iStat says 70% health with 249 cycles after 12 months. 3862mAh.

    WTF?

    I'm getting a new battery.

    EDIT: After reading tip's comment above, I'm more convinced. BTW, iStat's information matches the data from System Profiler; the data from Coconut is wonky, according to it my battery has experienced only 7 load-cycles.
     
  25. macrumors 68000

    Bobioden

    Joined:
    Sep 23, 2007
    Location:
    Denver
    #25
    65 cycles 3 months, 106% health

    Original capacity 5020 mAh 100%
    Current capacity 5345 mAh 106%

    Battery Health Monitor
     

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