i5 Macbook - 98% battery capacity?

Discussion in 'MacBook Pro' started by hockey9999, Apr 14, 2010.

  1. hockey9999 macrumors member

    Joined:
    Mar 11, 2010
    #1
    Does this look weird to anyone?

    Why would a battery one day out of the box only be capable of charging to 6808mAH / 6900mAH?

    Could it just be a matter of the battery not being calibrated yet?
     

    Attached Files:

  2. CJS7070 macrumors 6502a

    CJS7070

    Joined:
    Dec 10, 2008
    Location:
    Chicago, IL
    #2
    Probably. Try calibrating it and then report back.
     
  3. r.j.s Moderator emeritus

    r.j.s

    Joined:
    Mar 7, 2007
    Location:
    Texas
    #3
    It could just be CoconutBattery. It sometimes has trouble correctly reading the newest machines.
     
  4. hockey9999 thread starter macrumors member

    Joined:
    Mar 11, 2010
    #4
    Will do. What a pain in the a$$ process calibrating is... I probably won't do it until tomorrow night at this point.

    If anyone has an i5 and can check theirs, I would appreciate it.

    As far as it being CoconutBattery, iStatPro is reporting the same thing.

    It's probably a calibration issue... I hope.
     
  5. mrobison macrumors member

    Joined:
    Sep 18, 2007
    Location:
    AR
    #5
    Hmm... It also says that your computer is 123 months old. I didn't know i5 was around in 2000. Ha.
     
  6. hockey9999 thread starter macrumors member

    Joined:
    Mar 11, 2010
    #6
    System Profiler is also showing the full charge capacity as 6808 mAH...

    Battery Information:

    Model Information:
    Serial Number: W0008PTVGBX0A
    Manufacturer: SMP
    Device name: bq20z451
    Pack Lot Code: 0000
    PCB Lot Code: 0000
    Firmware Version: 0201
    Hardware Revision: 000a
    Cell Revision: 0157
    Charge Information:
    Charge remaining (mAh): 5737
    Fully charged: No
    Charging: No
    Full charge capacity (mAh): 6808
    Health Information:
    Cycle count: 2
    Condition: Normal
    Battery Installed: Yes
    Amperage (mA): -1497
    Voltage (mV): 11869
     
  7. r.j.s Moderator emeritus

    r.j.s

    Joined:
    Mar 7, 2007
    Location:
    Texas
  8. GGJstudios macrumors Westmere

    GGJstudios

    Joined:
    May 16, 2008
    #8
    The readings are never 100% accurate. Your battery capacity will fluctuate up and down over time. It's not unusual at all. You're fine, as long as it doesn't drop below 80% within 300 cycles.
     
  9. hockey9999 thread starter macrumors member

    Joined:
    Mar 11, 2010
    #9
    I calibrated it and am still not showing 100% capacity... Still hovering at right around 98%.
     
  10. zeroq macrumors newbie

    Joined:
    Mar 12, 2010
    #10
    My Macbook

    My 2.3 year old Macbook always showed 100% until about 2 weeks ago. It showed steady 98% for about two weeks then now shows 95%. System profile say it's in "good" condition, cycle count is 56. iStat shows 95% fully charged and 99% mark for "health".

    I'm thinking my battery "condition" has just peaked and now started to "dip". My Fujitsu Lifebook I've had for over 6 years I never even thought about the condition of the battery (but then it doesn't show the charge percentage figure nor do I use it much w/o the AC plugged in.)
     
  11. dcjustme macrumors newbie

    Joined:
    Mar 30, 2010
    #11
    Full Charge Capacity

    I've been reading this and other threads about battery life and noticed that most Full Charge Capacity readings are 6800 or so. Mine reads 5752. Is that an issue or do these vary all that much?
     
  12. GGJstudios macrumors Westmere

    GGJstudios

    Joined:
    May 16, 2008
    #12
    Which model Mac do you have? The newer MBPs have built-in batteries that have higher capacity than the removable batteries.
     
  13. dcjustme macrumors newbie

    Joined:
    Mar 30, 2010
    #13
    This is a brand new 13'' MBP. Just arrived on Monday.

    Charge Information:
    Charge remaining (mAh): 2857
    Fully charged: No
    Charging: Yes
    Full charge capacity (mAh): 5752
    Health Information:
    Cycle count: 4
    Condition: Normal
    Battery Installed: Yes
    Amperage (mA): 2775
    Voltage (mV): 11982
     
  14. GGJstudios macrumors Westmere

    GGJstudios

    Joined:
    May 16, 2008
    #14
    Have you calibrated it yet? Until you do, you have no idea if the readings are accurate, although yours sounds about right for the 13" MBP.

    Calibrating a portable computer battery
     
  15. dcjustme macrumors newbie

    Joined:
    Mar 30, 2010
    #15
    Not yet. I'm letting it run down now and I then I calibrate. Seeing the 6800 numbers made me nervous. I'll see what it says after the calibration and go from there. Thanks!
     
  16. wandrer2 macrumors member

    Joined:
    Feb 9, 2010
    #16
    When I first ran Coconut Battery, it showed pretty much exactly the results from the first post.

    Since my first calibration, the Current Battery Capacity went up to 7170 mAh; the Original Battery Capacity stayed at 6900 mAh.:confused:

    15" i7, hi-res antiglare model.
     
  17. lhotka macrumors regular

    Joined:
    Jun 9, 2008
    #17
    Same here (98%) - and also the same '123 months' old on my brand new machine.
     
  18. jess222 macrumors 6502

    jess222

    Joined:
    Apr 13, 2010
    Location:
    CA
  19. cluthz macrumors 68040

    cluthz

    Joined:
    Jun 15, 2004
    Location:
    Norway
    #19
    My first charge was 101% (6989) my next charge was 99% (6850),this is how battery works, they varies a bit from charge to charge.
    The same was the case with all my previous laptops.
    As long as it stays within 95%-105% don't worry.
     
  20. Gorilla Power macrumors 6502

    Gorilla Power

    Joined:
    Mar 19, 2010
  21. jess222 macrumors 6502

    jess222

    Joined:
    Apr 13, 2010
    Location:
    CA
    #21
    i tried that and mine still says 13000 mAh full, current is 12971, why is mine so high??
     
  22. tekchic macrumors 65816

    tekchic

    Joined:
    Apr 19, 2010
    Location:
    Phoenix, AZ
    #22
    I did my first calibrate last night on my new i5 and then let it rest today until the magsafe indicator went green then booted up.

    Still at 97% battery capacity at 6710/6900 mAh. Oh well. I guess it's close enough.
     
  23. Gorilla Power macrumors 6502

    Gorilla Power

    Joined:
    Mar 19, 2010
    #23
    Coconut Battery is buggy as crap. Look at the screenshots, it says original battery capacity is 1300 mAh. That's like an iPhone's battery capacity !
     
  24. paintballswimgu macrumors 6502

    Joined:
    Feb 13, 2010
    #24
    the probably just reused one of the old apple exploding batteries. no worries. j/k

    I wouldn't worry about it. If you have problems with it, apple with fix it.
     

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