Battery Health

Discussion in 'MacBook Pro' started by rdowty, Aug 30, 2011.

  1. rdowty macrumors 6502a

    rdowty

    Joined:
    Oct 5, 2008
    #1
    My previous laptops when new always had a battery capacity that exceeded design capacity by about 5%. After 9 months or so they'd hit the advertised capacity. This last computer was about 99% out of the box (bought in late Feb.) and is now at 92%. I'd like to hear what other people with 2011 MBP's say about this to find out if this is the new norm.
     

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  2. GuitarG20 macrumors 65816

    GuitarG20

    Joined:
    Jun 3, 2011
    #2
  3. rdowty thread starter macrumors 6502a

    rdowty

    Joined:
    Oct 5, 2008
    #3
    Just yesterday the battery was completely drained. I look at CoconutBattery about every week and the results have been pretty consistent but gradually getting lower.
     
  4. DWBurke811 macrumors 6502a

    Joined:
    Jun 10, 2011
    Location:
    Boca Raton, FL
    #4
    I thought calibrating had nothing to do with the capacity of the battery(which I don't see how it could?), and just helped the time remaining displayed be more accurate?

    Here's my coconut, mid 2010 that I got right after they came out:

    [​IMG]
     
  5. GuitarG20 macrumors 65816

    GuitarG20

    Joined:
    Jun 3, 2011
    #5
    if your battery health numbers are off, it can fix them.
     
  6. DWBurke811 macrumors 6502a

    Joined:
    Jun 10, 2011
    Location:
    Boca Raton, FL
    #6
    can you post a coconut screen shot of your battery at 7x cycles still holding 100%?
     
  7. jollygoodamy macrumors regular

    Joined:
    Jul 8, 2011
    #7
    Usually the first year of your Mac's battery health with fluctuate at lot.
     
  8. Prodo123 macrumors 68020

    Prodo123

    Joined:
    Nov 18, 2010
    #8
    25 cycles, 6880mAh remaining, designed for 6900.
     
  9. gorskiegangsta macrumors 65816

    gorskiegangsta

    Joined:
    Mar 13, 2011
    Location:
    Brooklyn, NY
    #9
    2011 Core i5 MBP
    Age: 22 weeks
    Cycles: 142 cycles
    Capacity: 96%

    It does fluctuate quite a bit. Last week it was 98%, week before that 94%. I wouldn't worry about it.
     

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