New Battery Drops Health After Calibration & Battery Update 1.3

Discussion in 'MacBook Pro' started by jlin615, Oct 6, 2007.

  1. jlin615 macrumors regular

    Joined:
    Nov 4, 2006
    Location:
    Los Angeles, CA.
    #1
    I had some low health issues with my last battery, so AppleCare sent me a replacement. The new battery I received was at 98% health before calibration (which I can live with). After calibration and battery update 1.3, it drops to 94% (now 95%) with only 2 cycles??
     
  2. mad jew Moderator emeritus

    mad jew

    Joined:
    Apr 3, 2004
    Location:
    Adelaide, Australia
    #2
    Just to check, are you talking about the charge or the health? If you're talking about the charge, then don't worry about it since your Mac won't start recharging your battery 'til it falls below 93%, so as to prevent constant discharging and recharging. :)
     
  3. jlin615 thread starter macrumors regular

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    Los Angeles, CA.
    #3
    The health is what I meant.
     
  4. jlin615 thread starter macrumors regular

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    Nov 4, 2006
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    Los Angeles, CA.
    #4
    Update

    The new battery was stayed at 95% health after second round of calibration. I put my old battery back in and I guess my MBP automatcally updates that battery to version 1.3. Now the old battery is at 100% health/5506-5508 mAh, so I guess I'm keeping my old battery and return the new one. Strange thing is how can I get over 5500 mAh when the battery spec is only 5500 mAh?
     
  5. magius macrumors regular

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    Jun 3, 2007
    #5
    happenned to me too. my battery replacemnt after 2 cycles is now at 96% and steady. maybe they just give you the lesser batteries or something. my old battery waas at over health for awhile, but then suddenly dropped to 25% health (which is why i got a replacement)
     
  6. eluk macrumors 6502a

    eluk

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    #6
    Mine was even greater.
     

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  7. brettanderson macrumors member

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    Jun 26, 2007
    #7
    eluk how long does your macbook pro last on battery?
     
  8. coocooforcocoap macrumors regular

    coocooforcocoap

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    Sep 22, 2007
    Location:
    kathmandu, nepal
    #8
    same boat

    my mbp is 3 weeks old and the bat only lasts 2hours and 1 minute. what to do? thanks!!! ps i have calibrated...
     
  9. bmcgrath macrumors 65816

    bmcgrath

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    London, United Kingdom
    #9
    eluk: shouldn't that battery explode at that capacity? :) careful now!
     
  10. Nick012 macrumors regular

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    Apr 28, 2007
  11. eluk macrumors 6502a

    eluk

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    #11
    I think it is getting on for four hours, don't run it right down very often. At 99% the menu bar says 4:52. :)
     
  12. theman macrumors 6502a

    Joined:
    Jul 26, 2007
    #12
    mine dropped too. i keep getting freezes when i wake from sleep also. now my battery is only charging to 96% of its capacity (which is now 5446mAh) i think i will just drain the battery again and see what happens.

    oh yeah, and coconut battery says my brand new week 38 mbp is 5 weeks old???? anyone else seen something like this?
     
  13. eluk macrumors 6502a

    eluk

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    Dec 14, 2006
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    East London, UK
    #13
    That is the week it was built and so is a few weeks old when you get it.
     
  14. brewno macrumors 6502

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    Jun 8, 2007
    Location:
    Montreal, Canada
    #14
    On my case, it's been on 5400's during the last past 3 months.
    After the update, from 5570 to 5333 in less than 3 days.
    If it keeps going down, is there a way to reverse this? :mad:
     
  15. jlin615 thread starter macrumors regular

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    Los Angeles, CA.
    #15
    Try fully charge it, then leave it overnight powered off and unplugged. I was at like 5490mAH (99% health) late last night, then I left it overnight powered off without plugging in the power adapter. This morning it boosted up to 5535mAh (100% health). This is from my experience. Let me know the result.
     
  16. theman macrumors 6502a

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    Jul 26, 2007
    #16
    well mine's been going up after an initial drop. it's now 5501. i think unless it is below 5300 you shouldn't worry. (for a new machine that is).
     
  17. theman macrumors 6502a

    Joined:
    Jul 26, 2007
    #17
    yeah, but my first mbp (this is a replacement) said it was 1 week old when i first got it. very strange. this one is going back anyway because it's also yellow....
     
  18. eluk macrumors 6502a

    eluk

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    #18
    Mine was 4 weeks. I would think it's unlikely to be less than a week.
     
  19. brewno macrumors 6502

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    Jun 8, 2007
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    Montreal, Canada
    #19

    [​IMG]
    If you see the pattern... in July, 100%. August-September, 99-98%. October 4th: update, so 100%. Three days later, 96%. And it keeps going down...
    I'm doing this calibration again tonight. Lets see how it goes tomorrow.
     
  20. Modjo macrumors member

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    Feb 17, 2005
    #20
    I'm having more or less the same issues here.
    After the update everything went better than fine. Health was up, capacity was higher than original etc. It actually seemed to performed better too. Battery life went up significantly.

    Yesterday i calibrated the battery and it's degraded, a lot! Capacity went from 5632mAh to 4744 mAh. The machine is a 2,33 Ghz C2D 15", 6 months old with only 36 cycles.
     
  21. spick macrumors member

    Joined:
    Aug 17, 2007
    #21
    My macbook is 2 months old and when I first got it it was at 99%health. First caliberation drop it to 95% and second caliberation drop it to 93%. At 7 charges. I'm going to do a third caliberation tonight and see what happens. It's either coconut is an inaccurate reader or these batteries straight blows.

    At what percent health do you guys get replacement? I want to get a replacement before my warrant end.
     
  22. NillaWafer89 macrumors newbie

    Joined:
    Jun 2, 2007
    #22
    My battery did the exact same thing. I have a 2.4 SR MacBook Pro and before the battery update, my health was at 96 and then after the update it went up to 99 and the battery life went up also. I have had the laptop since june 1 when they upgraded the processors. When i calibrated the battery it went from 99 to 95 and the battery life went back down. What is going on? Should it be doing this?
     
  23. scaredpoet macrumors 604

    scaredpoet

    Joined:
    Apr 6, 2007
    #23
    Folks, keep in mind that your battery's health hasn't really changed or improved. All that's happened is that the calibrartion data your battery had was wiped with the firmware update. As a result, it THINKS its health is 100%+.

    Do a battery calibration and see what I mean. Mine was at 100% after the update. After calibration: 95%.
     
  24. Modjo macrumors member

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    Feb 17, 2005
    #24
    scaredpoet; please read through the rest of the topic. There's more going on than what you've just described. It's not that obvious.
     

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