Shutting down randomly - no warning -__-

Discussion in 'MacBook' started by akad, Dec 6, 2011.

  1. akad macrumors member

    Jan 27, 2010

    On my 2008 White macbook, after 700 cycles my original battery finally died. So I got a new one (generic, saves $100) and that one did not work; one instant replacement, and it worked fine to begin with.
    Did a calibration, but during a full cycle, as the battery drains to 40%, at ~39% the computer shuts off without warning, and the battery indicator has one flashing dot (low-no power).

    When I plug in the power adapter and turn on the computer, it shows 0% and charges up normally.

    Should I ask for a replacement? Is there anything else I can try before an RMA??


    PS I have done an SMC reset multiple times. Also battery seems to discharge normally with low power warning if I stop charging at ~30%

    Here is my battery info:
    Model Information:
    Serial Number:
    Manufacturer: DP
    Device Name: ASMB013
    Pack Lot Code: 0
    PCB Lot Code: 0
    Firmware Version: 102
    Hardware Revision: 300
    Cell Revision: 100
    Charge Information:
    Charge Remaining (mAh): 172
    Fully Charged: No
    Charging: Yes
    Full Charge Capacity (mAh): 5838
    Health Information:
    Cycle Count: 3
    Condition: Normal
    Battery Installed: Yes
    Amperage (mA): 2377
    Voltage (mV): 10820
  2. ezramoore macrumors 6502a

    Mar 20, 2006
    Washington State
    I'm confused, did you end up with a generic battery or an Apple one?

    If you have a generic battery and the computer only exhibits random shutdowns on batter power, I would say the next step is to get a legitimate Apple battery. You should never run non-Apple batteries in your Mac.
  3. akad thread starter macrumors member

    Jan 27, 2010
    I got the generic one. The only reason being that I need to use the laptop until march/april when I will buy the new macbook pro, and could not justify spending $130 on a $400 (max)-worth macbook (that I am keeping for a few more months).
  4. ezramoore macrumors 6502a

    Mar 20, 2006
    Washington State
    Well generic batteries have two things going against them.

    1. They are not made by Apple, who has the best handle on how they should be designed (or whoever designed the battery for Apple).

    2. They are a race to the bottom in terms of quality, QA, durability, design.

    Does the machine randomly power down with the batter removed, running of mains power?
  5. Macman45 macrumors G5


    Jul 29, 2011
    Somewhere Back In The Long Ago
    You Are Better Off

    with Apple batteries, it's the one thing I won't scrimp on...You have found out the hard way that the extra $100 is worth it.

    RAM, yep I'll by from Crucial, but batteries are genuine Apple every time.

    Get rid of the generic and buy the real thing.
  6. akad thread starter macrumors member

    Jan 27, 2010
    I understand both your and madman's concerns with generic batteries, and completely agree.
    No, without the battery, the computer will not shut down randomly. My best guess is that the battery processor is not relaying accurate information about the battery's lifespan.

    Honestly, I just want a battery that allows me to move the computer from location to location without shutting down the computer immediately (w/ only the power cord). I'm not looking for ultimate portability and original-quality battery life that the macbook came with over 3 years ago.
    Is it still not good to buy a generic battery for such purposes given that I will keep the computer for 3-4 more months? The money is not an issue, I just want to be wise and refrain from unnecessary spending.

    I tried a PRAM reset and will see what that does (discharging now).

    Any more input? I really appreciate it
  7. blueroom macrumors 603


    Feb 15, 2009
    Toronto, Canada
    eBay your aftermarket battery and buy one from Apple.

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