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Thread: Macbook battery broken?

  1. #1
    Join Date
    Jul 2009
    Posts
    74

    Macbook battery broken?

    Hi,

    I have a PowerBook G4. When I am connecting the AC, the LED on the cable attached to red, so that the battery is recharged, but even after hours of charging, the LED battery status will remain in the lower level. Macbook starts and runs, the battery indicator shows 0% and not for calculating the remaining battery time. Heard a very slight "twirping" type of noise at times since the problem occurred, it seems out of the battery ...
    The battery is down and needs replacement? Does anyone have a clue?

  2. #2
    Join Date
    May 2008
    Posts
    686

    Re: Macbook battery broken?

    When connected through power, indicating the battery charge? for their condition. What does the battery show when you press the button at the bottom of it, how many LEDs are displayed when you move it?

  3. #3
    Join Date
    May 2008
    Posts
    376

    Re: Macbook battery broken?

    Are you saying that the battery will not charge to 100%? It is the full load capacity showing up to 1863mAh? Try letting the battery drain to zero before loading up again. You must have a full load capacity of at least 5000mAh. Go to System Profiler and check it out to see Max Battery chargability.

  4. #4
    Join Date
    Dec 2007
    Posts
    195

    Re: Macbook battery broken?

    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 into.

    3. Disconnect the power adapter while 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, the low battery warning dialog appears on the screen.

    4. At this point, save your work. Continue to use your computer, when the battery gets very low, the computer will automatically go to sleep.
    Turn off the computer or allow it to sleep for five hours or more.
    Connect the power adapter and leave it connected until the battery is fully charged again.

    Tip: When the battery reaches "empty", the computer is forced into sleep mode. The battery actually keeps back a reserve beyond "empty", to maintain the computer in sleep for a period of time. Once the battery is truly exhausted, the computer is forced to shut down. At this point, with the safe sleep function introduced in the PowerBook G4 (15-inch Double-Layer SD) computers, the computer's memory contents have been saved to the hard drive. When power is restored, the computer returns itself to its pre-sleep state using the safe sleep image on the hard drive.

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