3 Replies Latest reply: Dec 4, 2010 10:21 AM by Sean Pic-Kell
Sean Pic-Kell Level 1 Level 1 (0 points)
I have been having the recent problem that if I use my 17" Mac Book Pro on battery I can't leave it on for extended periods because the battery will drain considerably even when in sleep. In the past I was able to leave the laptop on and put it in my bag and wake it up a few hours later with very little battery loss. Now it seems as if the machine is not going to sleep and just continues to drain the battery.

My sleep settings are still the same. Is there something that can be preventing the machine from fully going to sleep, like leaving a browser open?

Any help would be appreciated.

Thanks, Sean

17" Mac Book Pro, Mac OS X (10.6.5), Late 2006 vintage
  • Toocool4 Level 2 Level 2 (365 points)
    Have a look at this may help http://www.youtube.com/watch?v=TR00IBXZO8s
  • Allan Jones Level 7 Level 7 (32,465 points)
    I'm suspecting your battery is failing.

    I'm on my second failing MBP battery now. With both, as they began to fail, they would lose much more charge when sleeping that they did when new. When new, 12 hours of sleep would seldom use more than 5 percent of the charge. As the batteries started to go walkabout, that increased to 20-40 percent.

    System Profiler will tell you the health of your battery (it's in Applications > Utilities). Launch it and select "Power" in the left pane. When the power info appears in the main window, copy and paste the "Battery Information" section into a response to your own thread. *BE SURE* to omit any serial numbers before posting.

    We can then look at that report and see if any of the numbers suggest a problem. If the batter yis not the original, please state its approximate age.

    Is there something that can be preventing the machine from fully going to sleep, like leaving a browser open?


    I would be very careful in considering this. The huge downside is heat. If the computer is running with the lid closed in a bag. the temps could exceed what the innards can handle. I had my MBP wake up in the bag during a short trip home from a local museum--maybe 5 minutes max travel--and the case was so hot it was nearly impossible to touch.
  • Sean Pic-Kell Level 1 Level 1 (0 points)
    Sorry I haven't replied to the suggestions. I got busy and forgot I had posted this. Here is the battery information from System Profiler. I have two batteries listed, one is the original Apple battery that came with the unit and the second is a third party one I purchased a few months ago.

    What I have found is that if I leave the lid open even with no applications running the machine won't fully go to sleep and will drain the battery. If I close the lid the machine seems to go to sleep and the battery won't drain much even after a few hours.

    Apple Battery Information:

    Model Information:
    Manufacturer: SMP
    Device name: ASMB014
    Pack Lot Code: 0001
    PCB Lot Code: 0000
    Firmware Version: 0102
    Hardware Revision: 0202
    Cell Revision: 0100
    Charge Information:
    Charge remaining (mAh): 3697
    Fully charged: Yes
    Charging: No
    Full charge capacity (mAh): 3697
    Health Information:
    Cycle count: 52
    Condition: Check Battery
    Battery Installed: Yes
    Amperage (mA): 151
    Voltage (mV): 12597

    Third Party Battery Information:

    Model Information:
    Manufacturer: GSA-A1189
    Device name: ASMB014
    Pack Lot Code: 8641
    PCB Lot Code: 1a20
    Firmware Version: ff14
    Hardware Revision: 000c
    Cell Revision: 00c8
    Charge Information:
    Charge remaining (mAh): 6558
    Fully charged: Yes
    Charging: No
    Full charge capacity (mAh): 6566
    Health Information:
    Cycle count: 15
    Condition: Normal
    Battery Installed: Yes
    Amperage (mA): 349
    Voltage (mV): 12529

    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: No
    Current Power Source: Yes
    Display Sleep Uses Dim: Yes
    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
    Reduce Brightness: Yes