MacBook Pro Normal Battery Health?

Discussion in 'MacBook Pro' started by MrMan112, Aug 24, 2008.

  1. MrMan112 macrumors member

    Joined:
    Feb 4, 2005
    #1
    I have a 14 month old MBP. After full charge, I am left with only alittle above an hour of battery life. iStatPro tells me that my battery is at 31% usage and has been through 310 cycles. I probably could have been much better about calibrating the battery (I've only done this about a handful of times). Is this normal battery health given the # of cycles and usage? Thanks!
     
  2. MrMan112 thread starter macrumors member

    Joined:
    Feb 4, 2005
    #2
    Some more info:

    Battery Information:

    Manufacturer: Sony
    Device name: ASMB012
    Pack Lot Code: 0003
    PCB Lot Code: 0000
    Firmware Version: 102a
    Hardware Revision: 0500
    Cell Revision: 0303
    Charge Information:
    Charge remaining (mAh): 1322
    Fully charged: No
    Charging: No
    Full charge capacity (mAh): 1654
    Health Information:
    Cycle count: 310
    Condition: Good
    Battery Installed: Yes
    Amperage (mA): -1659
    Voltage (mV): 11747
     
  3. jdzialak macrumors regular

    Joined:
    Aug 14, 2008
    #3

    What do you mean by "calibrating the battery"?

    Joe
     
  4. MrMan112 thread starter macrumors member

    Joined:
    Feb 4, 2005
    #4
    http://support.apple.com/kb/HT1490

    PowerBook G4 (15-inch Double-Layer SD), MacBook (all models), MacBook Pro (all models), and MacBook Pro (17-inch) (all models)

    The battery calibration for the PowerBook G4 (15-inch Double-Layer SD) and any model of MacBook or MacBook Pro has been updated because of a new battery released with this computer. With these computers, follow these steps to calibrate your battery:

    1. Plug in the power adapter and fully charge your PowerBook's battery until the light ring or LED on the power adapter plug changes to green and the onscreen meter in the menu bar indicates that the battery is fully charged.
    2. Allow the battery to rest in the fully charged state for at least two hours. You may use your computer during this time as long as the adapter is plugged in.
    3. Disconnect the power adapter with the computer still on and start running the computer off battery power. You may use your computer during this time. When your battery gets low, you will see the low battery warning dialog on the screen.
    4. Continue to keep your computer on until it goes to sleep. Save all your work and close all applications when the battery gets very low, before the computer goes to sleep.
    5. Turn off the computer or allow it to sleep for five hours or more.
    6. Connect the power adapter and leave it connected until the battery is fully charged again.
     
  5. rangerrick337 macrumors newbie

    Joined:
    Sep 2, 2008
    #6
    Mr. Man, I am having the same thing happen. My battery was down to 35% with only 25 cycles! I "calibrated" it last night and now the health says 23%! What is going on? This seems like an overnight phenomenon for me. As you can see with only 25 cycles my computer is mostly plugged in, so the battery should not be dead. My old iBook G3 still had 80% life after 5 years of diligent service.

    I'm worried that even though this seems like a defective battery, it won't be replaced because I don't have apple care. Mine is also 14 months old.

    Are there any other suggestions for battery maintenance?

    Battery Information:

    Model Information:
    Serial Number: Sony-ASMB012-36dd-11b
    Manufacturer: Sony
    Device name: ASMB012
    Pack Lot Code: 0003
    PCB Lot Code: 0000
    Firmware Version: 102a
    Hardware Revision: 0500
    Cell Revision: 0303
    Charge Information:
    Charge remaining (mAh): 1262
    Fully charged: Yes
    Charging: No
    Full charge capacity (mAh): 1262
    Health Information:
    Cycle count: 25
    Condition: Check battery
    Battery Installed: Yes
    Amperage (mA): 0
    Voltage (mV): 12366


    MBP, 2.2 ghz santa rosa, 4 GB ram, 320 GB WD hard drive
     
  6. rogair macrumors member

    Joined:
    Dec 1, 2007
    #7
    Apple only covers batteries for 1 year or 300 charge cycles (whichever comes first). I would say to call Apple to see if they think it's defective, but since you don't have Apple Care, they might just tell you what I just did.
     
  7. creator2456 macrumors 68000

    creator2456

    Joined:
    Jul 10, 2007
    Location:
    Chicago
    #8
    Calibrating won't help a defective (or good) battery last longer. All the calibration does is help the battery know its own high and low limit so it can tell you an accurate % and time remaining.

    Apple says that a battery should hold around 80% health up to 300 cycles. Since you are barely over the 300 cycles and well under the 80%, call Apple and see what they can do for you.
     
  8. jdzialak macrumors regular

    Joined:
    Aug 14, 2008
    #9
    My MBP is only 4 months old.
    My health is 94% with 40 cycles.
    Should I use it plugged in more? Or am I in the normal usage range.
    Is 40 cycles a lot for 5 months?


    Joe
     
  9. DaveTheGrey macrumors 6502a

    DaveTheGrey

    Joined:
    Dec 28, 2003
    #10
    Mine is 89% with 174 Cycles in 11 Months.
    I think yours is fine.
     
  10. smartalic34 macrumors 6502a

    smartalic34

    Joined:
    May 16, 2006
    Location:
    USA
    #11
    jdzialak: you're in the normal range, I believe.

    to the OP: you're battery is obviously defective. I had a battery that was out of warranty, but I took it to an Apple Store anyway. the genius saw the battery stats in the system profiler and offered to swap it for free. definitely give it a try... because your cycle count is so low, you have a chance they'll give you a new battery
     
  11. tecknical macrumors regular

    Joined:
    Jul 23, 2008
    #12
    isnt that one of the Sony batteries for which Apple issued a recall a while back?
     
  12. rangerrick337 macrumors newbie

    Joined:
    Sep 2, 2008
    #13
    Apple rocks

    I checked the recall serial numbers and my battery was not in that range.

    Update: I just got off the phone with apple. They are replacing my battery free of charge without even having to talk to a manager. And even more impressive the guy worked his ass off trying to figure out how to get the battery out to me (I live in Thailand) and for me to get the battery back within 30 days. I luckily have a friend visiting soon and I'm going to do the exchange through him, but what great service!

    For at least this moment I'm letting myself off the hook for being a day late on buying apple care. The first thing to go wrong outside of service was still covered!

    Thanks everyone
     
  13. gelatin macrumors 6502

    Joined:
    Sep 16, 2006
    #14
    ive had 285 cycles health 87% after about 5 months of constant use
    good or bad?
     
  14. creator2456 macrumors 68000

    creator2456

    Joined:
    Jul 10, 2007
    Location:
    Chicago
    #15
    Normal. Why so many cycles in such a short time?
     
  15. gelatin macrumors 6502

    Joined:
    Sep 16, 2006
    #16
    no idea, how do cycles work?
    i thought the cycle count was high
     
  16. gelatin macrumors 6502

    Joined:
    Sep 16, 2006
  17. plaidhippo macrumors member

    Joined:
    Mar 30, 2007
    #18
    oops, probably should have searched...

    I just found this thread. I actually posted a similar thread this morning here -- http://forums.macrumors.com/showthread.php?t=560254 -- but it looks like you guys are having the same problems i am now! Ridiculously low battery life for only a 1 year old computer! I'm going home to my mbp to see how it compares and i'll take it to the apple store if it looks really bad!

    Hope you guys get lucky and find a battery that doesn't blow!

    BTW, does anyone have a link to this battery recall? does it apply to santa rosa mbp?

    Thanks!
     
  18. alphaod macrumors Core

    alphaod

    Joined:
    Feb 9, 2008
    Location:
    NYC
  19. creator2456 macrumors 68000

    creator2456

    Joined:
    Jul 10, 2007
    Location:
    Chicago
    #20
    A cycle is any combination of 100% discharge + 100% charge. Meaning if you let the battery run down from a full charge to 0 then charge back to full, it is one cycle. It can also be 10 discharges of 100% to 90% and charging back to 100%.

    As for my question, how have you managed so many cycles in such a short time?
     
  20. MowingDevil macrumors 68000

    MowingDevil

    Joined:
    Jul 30, 2008
    Location:
    Vancouver, BC & Sydney, NSW
    #21
    Are you certain? I was under the impression that every time you plugged in the adapter to recharge it was a cycle. That might explain how he has so many. fore
     
  21. smartalic34 macrumors 6502a

    smartalic34

    Joined:
    May 16, 2006
    Location:
    USA
    #22
    yes creator2456 has it right... that's how you calculate a cycle
     
  22. gelatin macrumors 6502

    Joined:
    Sep 16, 2006
    #23
    thats what i thought but then i dont know how i have so many cycles. i do use my laptop everyday pretty much all day.
     
  23. georgieff macrumors newbie

    georgieff

    Joined:
    Sep 11, 2008
    Location:
    Los Angeles, CA
    #24
    Battery Information:

    Model Information:
    Serial Number: Sony-ASMB012-38a5-66
    Manufacturer: Sony
    Device name: ASMB012
    Pack Lot Code: 0000
    PCB Lot Code: 0000
    Firmware Version: 0110
    Hardware Revision: 0500
    Cell Revision: 0303
    Charge Information:
    Charge remaining (mAh): 4670
    Fully charged: Yes
    Charging: No
    Full charge capacity (mAh): 4835
    Health Information:
    Cycle count: 37
    Condition: Good
    Battery Installed: Yes
    Amperage (mA): 0
    Voltage (mV): 12402

    86% for 4 months and 37 cycles are too little or not ?
     
  24. bobnugget macrumors regular

    Joined:
    Nov 15, 2006
    Location:
    Kent, England
    #25
    Just had mine replaced...

    Here's the guts:

    Model Information:
    Serial Number: Sony-ASMB012-3566-eab0
    Manufacturer: Sony
    Device name: ASMB012
    Pack Lot Code: 0003
    PCB Lot Code: 0000
    Firmware Version: 102a
    Hardware Revision: 0400
    Cell Revision: 0303
    Charge Information:
    Charge remaining (mAh): 535
    Fully charged: No
    Charging: Yes
    Full charge capacity (mAh): 2456
    Health Information:
    Cycle count: 195
    Condition: Check battery
    Battery Installed: Yes
    Amperage (mA): 1895
    Voltage (mV): 12294


    I've had it since new (nearly 2 years, it's a 2.16 C2D), and usually use the laptop til its empty, charge it, repeat. In the last week or so, the battery has dropped to just over an hour full-empty, and started to bulge at the bottom...

    Replacement (on an apple care swap-out) is on the way.
     

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