Battery problem on a Core Duo MacBook

Discussion in 'MacBook' started by kabunaru, Aug 7, 2008.

  1. kabunaru Guest

    Joined:
    Jan 28, 2008
    #1
    I have run into a first "problem" with my MacBook.
    Sometimes, my battery is at like 90% then the next minute it would be like at 78% or so. Another instance, in like 5 minutes my battery was drained from 68% to like 31%. Then in a minute or so after that it would be like at 23%. My battery on my MacBook drains too fast. I have to keep my MacBook plugged in with the charger. It's not really a "portable" laptop anymore.

    Should I get a new battery?
    Thanks for the help.
     
  2. me_94501 macrumors 65816

    me_94501

    Joined:
    Jan 6, 2003
    #2
    Souds like you might need a new one.

    Go to Apple menu -> About the Mac and click on "More Info," which will launch System Profiler. Look under Power and it should tell you about your battery's health.
     
  3. kabunaru thread starter Guest

    Joined:
    Jan 28, 2008
    #3
    Cycle count: 598
    Amperage (mA): 711
    Voltage (mV): 12412

    Do these numbers mean something? :confused:
     
  4. KoolStar macrumors demi-god

    KoolStar

    Joined:
    Oct 16, 2006
    Location:
    Kentucky
    #4
    That is quite a few cycles, apples guarantees that batteries will hold 80% of their charge if properly maintained for 300 cycles. You are well above that, I would recommend getting a new battery.
     
  5. jerryhijos macrumors newbie

    Joined:
    Aug 23, 2009
    #5
    I have this problem too!

    My macbookpro battery is draining way too fast as well. Here are my numbers:

    Battery Information:

    Model Information:
    Serial Number: SMP-bq20z951-3949-1563
    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): 2539
    Fully charged: No
    Charging: No
    Full charge capacity (mAh): 4558
    Health Information:
    Cycle count: 172
    Condition: Good
    Battery Installed: Yes
    Amperage (mA): -3036
    Voltage (mV): 11147

    System Power Settings:

    AC Power:
    System Sleep Timer (Minutes): 10
    Disk Sleep Timer (Minutes): 10
    Display Sleep Timer (Minutes): 10
    Automatic Restart On Power Loss: No
    Wake On AC Change: No
    Wake On Clamshell Open: Yes
    Wake On LAN: Yes
    Display Sleep Uses Dim: Yes
    GPUSwitch: 2
    Battery Power:
    System Sleep Timer (Minutes): 10
    Disk Sleep Timer (Minutes): 10
    Display Sleep Timer (Minutes): 2
    Wake On AC Change: No
    Wake On Clamshell Open: Yes
    Display Sleep Uses Dim: Yes
    GPUSwitch: 2
    Reduce Brightness: Yes

    Hardware Configuration:

    UPS Installed: No

    AC Charger Information:

    Connected: No
    Charging: No

    So according to the info, my battery is fairly new, but what is up with the negative amperage?

    Thanks to anyone who can enlighten me.
     

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