Battery life after 11 months

Discussion in 'MacBook' started by jjk454ss, Oct 23, 2009.

  1. jjk454ss macrumors 601

    jjk454ss

    Joined:
    Jul 10, 2008
    #1
    My Macbook battery life seems to be much lower than when first purchased it. Below is the info from system profiler, does this look normal for almost 11 months old? When I first unplug the charger it says over 5 hours battery left, but I think I get between 2-3 hours. Mostly web surfing with wifi. Then after 10 minutes of just sitting it is at 93%, but still says over5 hours left. Also, after waking it after leaving it in sleep mode, it seems to be constantly telling me it is on reserve power and to plug it in, even though I don't really remember it being low when I left it last.

    The lower battery life seems to have started after I installed a OCZ SSD. My last Macbook battery life improved after installing an Intel SSD.

    Model Information:
    Serial Number: 6N848099S13C
    Manufacturer: SMP
    Device name: bq20z951
    Pack Lot Code: 0000
    PCB Lot Code: 0000
    Firmware Version: 002a
    Hardware Revision: 000a
    Cell Revision: 0100
    Charge Information:
    Charge remaining (mAh): 4030
    Fully charged: Yes
    Charging: No
    Full charge capacity (mAh): 4030
    Health Information:
    Cycle count: 144
    Condition: Normal
    Battery Installed: Yes
    Amperage (mA): 0
    Voltage (mV): 12522
     
  2. jjk454ss thread starter macrumors 601

    jjk454ss

    Joined:
    Jul 10, 2008
    #2
    After 30 minutes:

    Battery Information:

    Model Information:
    Serial Number: 6N848099S13C
    Manufacturer: SMP
    Device name: bq20z951
    Pack Lot Code: 0000
    PCB Lot Code: 0000
    Firmware Version: 002a
    Hardware Revision: 000a
    Cell Revision: 0100
    Charge Information:
    Charge remaining (mAh): 3528
    Fully charged: No
    Charging: No
    Full charge capacity (mAh): 4039
    Health Information:
    Cycle count: 144
    Condition: Normal
    Battery Installed: Yes
    Amperage (mA): -935
    Voltage (mV): 12095

    After 1 hour:

    Battery Information:

    Model Information:
    Serial Number: 6N848099S13C
    Manufacturer: SMP
    Device name: bq20z951
    Pack Lot Code: 0000
    PCB Lot Code: 0000
    Firmware Version: 002a
    Hardware Revision: 000a
    Cell Revision: 0100
    Charge Information:
    Charge remaining (mAh): 3042
    Fully charged: No
    Charging: No
    Full charge capacity (mAh): 4039
    Health Information:
    Cycle count: 144
    Condition: Normal
    Battery Installed: Yes
    Amperage (mA): -906
    Voltage (mV): 11743
     
  3. testcard macrumors 68020

    testcard

    Joined:
    Apr 13, 2009
    Location:
    Middle England
    #3
  4. DarkHeraldMage macrumors 6502a

    DarkHeraldMage

    Joined:
    Oct 5, 2007
    Location:
    Fort Worth, TX
    #4
    I second the recommendation to use Coconut battery. I installed it the first time I booted up my Macbook Pro and monitored one a month or so from then on. Almost 2 years later and the battery was almost at 50% of the norm, but I wouldn't have had a measurable way of knowing that without tracking through coconut.

    As a side note, my battery bulged and Apple gave me a brand new one courtesy of AppleCare, so now I'm back at 100%. :D
     
  5. testcard macrumors 68020

    testcard

    Joined:
    Apr 13, 2009
    Location:
    Middle England
  6. jjk454ss thread starter macrumors 601

    jjk454ss

    Joined:
    Jul 10, 2008
    #6
    Thanks for the info. I'll check out coconutbattery and calibrate the battery tonight.
     
  7. DarkHeraldMage macrumors 6502a

    DarkHeraldMage

    Joined:
    Oct 5, 2007
    Location:
    Fort Worth, TX
    #7
    Make sure you open the little foldout tray on coconut and save the readouts. And I recommend recording the first reading when the computer is fully charged. That'll help. :cool:
     
  8. jjk454ss thread starter macrumors 601

    jjk454ss

    Joined:
    Jul 10, 2008
    #8
    Sweet, thanks.
     
  9. forester54 macrumors member

    forester54

    Joined:
    Oct 5, 2009
    Location:
    Washington
    #9
    there is definitely something wrong because I have lost 103 mAh in 22 months. (started at 5020 mAh) Do you still have applecare? I would take it in and have them test it.
     
  10. jjk454ss thread starter macrumors 601

    jjk454ss

    Joined:
    Jul 10, 2008
    #10
    I do still have Applecare, but how do they determine if it is a defect and will replace it?
     
  11. DarkHeraldMage macrumors 6502a

    DarkHeraldMage

    Joined:
    Oct 5, 2007
    Location:
    Fort Worth, TX
    #11
    It's really a toss-up as to whether or not they'll replace it, so all you can do is try. They may say that the decrease is within a tolerable range that they have predefined and tell you to make do or purchase another one. They may also say that it's way outside the reasonable limits for degradation over the period of time you've had it, and will replace it instantly. You can't really know unless you go in and let them have a look-see. What could it hurt? Might get a new battery out of it, but you definitely won't get a new battery if you don't let them look at it. :p
     
  12. jjk454ss thread starter macrumors 601

    jjk454ss

    Joined:
    Jul 10, 2008
    #12
    Yeah, I'll be out near an Apple store on Sunday, maybe I'll set up an appt and see what they say. Thanks
     
  13. jjk454ss thread starter macrumors 601

    jjk454ss

    Joined:
    Jul 10, 2008
    #13
    After calibrating it last night, my capacity shows even less:

    Full charge capacity (mAh): 3978
     

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