What is the lifespan of macbook pro battery?

Discussion in 'MacBook Pro' started by macdaddy612, Aug 8, 2012.

  1. macdaddy612 macrumors newbie

    Joined:
    Aug 13, 2010
    #1
    Sorry for my horrible english grammar but english is my second language. I have early 15" macbook pro, and I bought late December 2011.Right now my battery cycles is 462 therefore my current max is 85%, 5922 mAh. Is this bad?
     
  2. simsaladimbamba

    Joined:
    Nov 28, 2010
    Location:
    located
    #2
    Yesterday I replaced a battery, which had 1433 cycles since 11/2008 and was down to 47 % of its original capacity.
    The batteries built into the current MacBooks are quite good and are promised to keep their capacity over 80% for at least 1000 cycles.

    But how come, you have 462 cycles in less than a year? That is almost two cycles per day. You don't need to disconnect the Mac from the power once it has fully charged.

    ______________________________________________________
    This should answer most, if not all, of your battery questions:
    Apple Notebook Battery FAQ by GGJstudios
    The F.A.Q. includes the following topics:
    • BATTERY INFORMATION
    • BATTERY LIFE FROM A CHARGE
    • AC POWER
    • CALIBRATION
    • BATTERY LIFESPAN
    • CHECKING STATUS AND HEALTH
    • CHARGING
    • WHAT IS A CYCLE?
    • BATTERIES ARE NOT COVERED
    • BULGING OR SWELLING BATTERY


    ______________________________________________________
     
  3. macdaddy612 thread starter macrumors newbie

    Joined:
    Aug 13, 2010
    #3
    Is it too late for me now?
     
  4. simsaladimbamba

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    located
    #4
    For what?
     
  5. macdaddy612 thread starter macrumors newbie

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    Aug 13, 2010
    #5
    To care of it or replace it?
     
  6. ender land macrumors 6502a

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    Oct 26, 2010
    #6
    I get 3-4 hours battery life out of my 13" mbp battery from 2010 with about 400 cycles on it.
     
  7. macdaddy612 thread starter macrumors newbie

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    Aug 13, 2010
    #7
    To take care of it?
     
  8. leman macrumors 604

    Joined:
    Oct 14, 2008
    #8
    I have 88% with 771 load cycles on my 2009 MBP, it is on 10 hours a day and I am really careless about charging it. No idea how you managed to do 450 load cycles in such a short time :eek:
     
  9. simsaladimbamba

    Joined:
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    #9
    No. Have you read the FAQ yet? And again, do you charge the MacBook Pro and then after that has finished use it on battery again? Otherwise I can't explain the high cycle count.
    We just don't ask questions for fun, it helps us with helping you. But then again, who wants that anyway.
     
  10. sammyvine macrumors regular

    Joined:
    Aug 12, 2012
    #10
    Whats the best way to save a macbook pro battery

    Always leaving it on charge or what?
     
  11. Dark Void macrumors 68030

    Dark Void

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    Jun 1, 2011
    Location:
    Cimmerian End
    #11
    Use it normally and let it discharge once in a while. In other words, don't leave it plugged in 100% of the time.
     
  12. leman macrumors 604

    Joined:
    Oct 14, 2008
    #12
    If you want data for comparison my 33 month old MBP (2009) has 803 loadcycles and 88% capacity left. I never took any care of the battery (actually, I was rather careless).
     
  13. simsaladimbamba

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    #13
    In addition to Dark Void's reply, also take a look at the battery FAQ linked to in post #2.
     
  14. Keinding macrumors newbie

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    Jul 28, 2012
    #14
    Hi!

    How can you check how many cycles you battery have done?

    ----------

    Found it ;)
    *just needed to look for it... :D
     
  15. Erasmus macrumors 68030

    Erasmus

    Joined:
    Jun 22, 2006
    Location:
    Hiding from Omnius in Australia
    #15
    2011 MBP, bought around March. 104 cycles, 98% health. I never bother calibrating my battery, and only every now and again use it unplugged.

    I use iStat Pro to get my battery health.

    My previous MBP (2006, pre-unibody, replaceable battery) had its battery almost completely fail at around 250 cycles. The technology used in batteries today is leagues ahead of tech back then.

    PS: If you're worried about battery health, first thing to do is calibrate your battery, to check that the health being reported is accurate.
     
  16. whoknows87 macrumors 6502a

    whoknows87

    Joined:
    Aug 8, 2012
    Location:
    S.Florida
    #16
    get iStat or Coconut battery

    I believe apple charges$99 for a new battery on 2009 Models, thats what Genius Bar told me , mine is about 2 years old 65% life left ill wait til it hits 30% lol
     
  17. GGJstudios macrumors Westmere

    GGJstudios

    Joined:
    May 16, 2008
    #17
    The built-in batteries in the newer Mac unibody notebooks come pre-calibrated and do not require regular calibration like the removable batteries in older Apple notebooks.
     

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