Another Battery Problem for the Macbook Pro

Discussion in 'MacBook Pro' started by spinacci, Mar 25, 2010.

  1. spinacci macrumors newbie

    Joined:
    Sep 28, 2007
    #1
    Hi,

    I had my battery replaced on my Macbook Pro about 9 months ago and now this new battery is suddenly doing weird things. It's saying 0% but I'm still able to use it for the past 30 minutes. The indicator says it's still calculating.

    Here is battery info under System Profiler:

    Model Information:
    Serial Number: Sony-ASMB012-3a4c-9cc2
    Manufacturer: Sony
    Device name: ASMB012
    Pack Lot Code: 0001
    PCB Lot Code: 0000
    Firmware Version: 0110
    Hardware Revision: 0500
    Cell Revision: 0303
    Charge Information:
    Charge remaining (mAh): 0
    Fully charged: No
    Charging: No
    Full charge capacity (mAh): 2343
    Health Information:
    Cycle count: 66
    Condition: Check Battery
    Battery Installed: Yes
    Amperage (mA): -1213
    Voltage (mV): 11021

    The Amperage looks really weird. It totally does not make sense. I gotta feeling I need another replacement battery. Anyone know if it could be something else other than the battery?

    Thanks
     
  2. spinacci thread starter macrumors newbie

    Joined:
    Sep 28, 2007
    #2
    Well, my battery finally lost all it's charge about 1.5 hours after showing 0%. I'm going to let it sit and charge it tomorrow. Will post an update.
     
  3. Pax macrumors 6502a

    Joined:
    Dec 12, 2003
    #3
    Possibly it needs calibrating, full discharge and charge like you're doing.

    More likely it's failed. Condition: Check Battery = near failure

    Talk to whoever sold it to you - it should still be under warranty after 9 months, and 66 cycles is nothing

    I don't understand the amperage either. It should + if it's charging.
     
  4. m85476585 macrumors 65816

    Joined:
    Feb 26, 2008
    #4
    Amperage is - if it is discharging, + if it's charging. A full charge capacity of 2343 indicates that you probably need a new battery. Once it gets that low, the charge circuitry can't really predict what the battery is doing any more, which can cause unpredictable behavior (randomly shutting off or always showing 0% or stuff like that).
     
  5. spinacci thread starter macrumors newbie

    Joined:
    Sep 28, 2007
    #5
    Thanks for the replies.

    Yes, it looks like I need a new battery. I've fully charged it (took 3+ hours) and the battery info doesn't look that much different:

    Model Information:
    Serial Number: Sony-ASMB012-3a4c-9cc2
    Manufacturer: Sony
    Device name: ASMB012
    Pack Lot Code: 0001
    PCB Lot Code: 0000
    Firmware Version: 0110
    Hardware Revision: 0500
    Cell Revision: 0303
    Charge Information:
    Charge remaining (mAh): 3062
    Fully charged: Yes
    Charging: No
    Full charge capacity (mAh): 3102
    Health Information:
    Cycle count: 67
    Condition: Check Battery
    Battery Installed: Yes
    Amperage (mA): -2072
    Voltage (mV): 12144

    Anyhoo, thanks for the help. I'll be popping by an Apple store.
     
  6. The ArchAngel macrumors regular

    Joined:
    Jun 23, 2008
    #6
    Yeah I would definitely get that battery replaced. My original battery on my MBP, just shy of 2 years old, still has a charge capacity of about 4000 mAh after around 325 cycles, so something is definitely not right in your case.
     
  7. spinacci thread starter macrumors newbie

    Joined:
    Sep 28, 2007
    #7
    I brought it in and now I have to wait for my replacement. Hopefully, I will get a new one early next week.

    Maybe I should try another brand of battery next time. Any suggestions? It's hard to believe that I've gone through two batteries in less than 3 years. :(
     
  8. spinacci thread starter macrumors newbie

    Joined:
    Sep 28, 2007
    #8
    Got my replacement battery today. Hopefully, i will have better luck with this one than the past two batteries.
     

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