4 Replies Latest reply: Apr 14, 2012 8:46 PM by Winnie12_15
Winnie12_15 Level 1 Level 1 (0 points)

I bought my white Macbook less than two years ago, and updated to Lion last summer. But I recently found that the battery goes down very fast, it could be down to 50% within an hour even though it has just been charged. And for the laptop itself, it gets hot very easily! What's the problem of my Macbook? Please give me solutions of fixing it. Many Thanks!!

MacBook, Mac OS X (10.7.3)
  • 1. Re: Macbook battery goes down unbelievably fast.
    stedman1 Level 9 Level 9 (52,230 points)

    The Apple article below may help.





  • 2. Re: Macbook battery goes down unbelievably fast.
    frederic1943 Level 6 Level 6 (9,980 points)

    Go to the Apple in the upper left corner and select About This Mac, then click on More Info and then System Report, then select Power from the left hand column of the System Profiler. Copy and paste the Battery Information back here.

  • 3. Re: Macbook battery goes down unbelievably fast.
    MicBook Level 1 Level 1 (90 points)

    There's some information provided by Apple regarding batteries:



    Which one of MacBooks are you using? The last generation (unibody) or discrete one?

    For the MacBook (unibody), it is said that your battery should retain approximately 80% of its charge after about 1000 full charge cycles. For the discrete MacBook, it's about 300 cycles.


    You can check the battery charge cycle by going to the System Profile as another member has suggested. Or you can download an application called 'Coconut Battery'. It provides you with detailed information about your battery.

  • 4. Re: Macbook battery goes down unbelievably fast.
    Winnie12_15 Level 1 Level 1 (0 points)

    Here's the battery information:

      Model Information:

      Serial Number:          9G0120DNVE1MA

      Manufacturer:          DP

      Device Name:          bq20z451

      Pack Lot Code:          0

      PCB Lot Code:          0

      Firmware Version:          201

      Hardware Revision:          2

      Cell Revision:          158

      Charge Information:

      Charge Remaining (mAh):          3623

      Fully Charged:          No

      Charging:          Yes

      Full Charge Capacity (mAh):          5396

      Health Information:

      Cycle Count:          331

      Condition:          Normal

      Battery Installed:          Yes

      Amperage (mA):          691


    And how about the problem of the macbook gets hot? I never put the macbook anywhere near fire, the environment is absolutely cool and I even have the fan on...