10 Replies Latest reply: Jun 4, 2012 5:34 PM by Grant Bennet-Alder
Anastacio Level 1 Level 1 (0 points)

I have a MacBook pro I purchased in September of 2011.  I began having issues about a month ago with my computer not waking up when I would open the lid.  I would have to push the power button to get it to turn on.  During these last couple of weeks I started seeing the no batteries available message with an "x" through my battery indicator.  I have searched online and tried several "fixes."

 

I have tried resetting the SMC -- that worked once.  Few hours later, the problem comes back. 

 

I have tried resetting the PRAM -- no effect.

 

I was able to run off of battery while getting the "no batteries available" message.

 

I have tried powering on my computer with the magsafe connected,  and during the gray screen removing the power source -- that worked a couple of times. 

 

During the rare occasion I was able to get everything functioning properly, I was able to see that I had done 176 cycles on my battery.  I would think that I should have more cycles than that before the battery started failing.

 

Is there anything I'm missing?

 

Thanks in advance.


MacBook Pro, Mac OS X (10.7.4)
  • 1. Re: no batteries available
    eww Level 9 Level 9 (52,975 points)

    Your machine is still under warranty and needs to be examined by an Apple technician.

  • 2. Re: no batteries available
    Ralph Landry1 Level 7 Level 7 (32,445 points)

    While I agree with eww that you need to visit a genius bar, out of curiosity if you go to the apple menu, upper left corner of the menu bar, About This Mac, More Info, System Report, Hardware, Power, what does it say about the battery Condition, Cycles, Capacity, Voltage?

  • 3. Re: no batteries available
    Anastacio Level 1 Level 1 (0 points)

    Ralph,

     

    Thanks for the reply.  Here is the readout as it appears in system information.  All values for the battery read at zero, however I don't think I'd have anything other than zero since my MBP isn't recognizing the battery at the moment anyway.  On one of the occasions my computer recognized the battery, It read that I had 176 cycles.  I should have copied that screen.

  • 4. Re: no batteries available
    eww Level 9 Level 9 (52,975 points)

    Even if your battery were failing prematurely, it would be detected and some statistics would be displayed for it. That's not your problem. I suspect a bad connection or faulty cable.

  • 5. Re: no batteries available
    Ralph Landry1 Level 7 Level 7 (32,445 points)

    A MacBook Pro purchased in September 2011 wioth 176 charge cycles has had some serious battery usage...that is a cycle a day.  Projected battery life for that unit is 1000 charge cycles, but that is a statistical target, some will meet it some will not.  Discharge/charge behavior has a major impact on the actual battery life of an individual unit.  Studies done by an independent group called the Battery University show that the optimum pattern is discharge to 50% and then charge.  Deep discharging significantly shortens battery life.

     

    But back to the real question, I agree with eww, something is wrong in the electrical circuit, there should be some indication of the presence of the battery even if it has totally failed.  Since it is under warranty, I would take it, along with the charger, to an Apple genius bar or authorized repair center and have the techs run some diagnostics to see what the underlying issue is.

  • 6. Re: no batteries available
    Anastacio Level 1 Level 1 (0 points)

    I was able to get my computer to recognize my battery again, and I was mistaken on the cycle count.  It was 126, and not 176 like I had originally thought.  Here is the readout:

     

    Battery Information:

     

      Model Information:

      Serial Number:          D861176052YDGDMAA

      Manufacturer:          SMP

      Device Name:          bq20z451

      Pack Lot Code:          0

      PCB Lot Code:          0

      Firmware Version:          406

      Hardware Revision:          2

      Cell Revision:          157

      Charge Information:

      Charge Remaining (mAh):          984

      Fully Charged:          No

      Charging:          No

      Full Charge Capacity (mAh):          6308

      Health Information:

      Cycle Count:          127

      Condition:          Normal

      Battery Installed:          Yes

      Amperage (mA):          -1597

      Voltage (mV):          11001

     

    System Power Settings:

     

      AC Power:

      System Sleep Timer (Minutes):          10

      Disk Sleep Timer (Minutes):          10

      Display Sleep Timer (Minutes):          10

      Wake on AC Change:          No

      Wake on Clamshell Open:          Yes

      Wake on LAN:          Yes

      Current Power Source:          Yes

      Display Sleep Uses Dim:          Yes

      GPUSwitch:          2

      PrioritizeNetworkReachabilityOverSleep:          0

      RestartAfterKernelPanic:          157680000

      Standby Delay:          4200

      Standby Enabled:          0

      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

      RestartAfterKernelPanic:          157680000

      Standby Delay:          4200

      Standby Enabled:          0

     

    Hardware Configuration:

     

      UPS Installed:          No

     

    AC Charger Information:

     

      Connected:          Yes

      ID:          0x0100

      Wattage (W):          85

      Revision:          0x0000

      Family:          0x0085

      Serial Number:          0x001c7f03

      Charging:          No

     

     

     

    Now the machine says (Not Charging)  I'm wondering if there's a problem with the magsafe port.  Before I plugged it back in I took a terry cloth to the contacts in the port.

  • 7. Re: no batteries available
    Anastacio Level 1 Level 1 (0 points)

    More weirdness. . . .

     

    Following a hunch, I took a Q-tip and some alcohol and cleaned the contact points on both my Magsafe charger and the port on the computer and. . . .VOILA!  Computer is charging again.  I usually keep my charger in my bag in a dedicated pocket.  I'm pretty careful about dirt and such, so I'm not sure what happened.  I do live in a high humidity area.  Maybe that had something to do with my problems.

  • 8. Re: no batteries available
    Ralph Landry1 Level 7 Level 7 (32,445 points)

    Might help to keep this handy for troubleshooting MagSafe systems.

     

    It takes very little lint, etc., to mess things up, and almost impossible to keep those things out.  High humidity isn't very computer friendly but something a lot of us have to live with.

     

    Glad to hear it is working again, hope that continues..and now you know a first-line of attack if there is another problem.

     

    Best of luck.

  • 9. Re: no batteries available
    Anastacio Level 1 Level 1 (0 points)

    I thought I was out of the woods. . . . .

     

    The problem has returned and now I can't seem to get it to stay fixed.  I will be taking it to a local authorized repair center in the coming days. 

     

    I was able to get my Laptop to recognize the battery for a moment.  It began charging from 0% and got to 11% when all of a sudden, the magsafe LED went from amber to green, and the Battery indicator went from showing a percentage to showing the "x" in the icon.  I'm now beginning to think my initial "fix" was just luck and there was no fix at all.

     

    I'm just a bit annoyed that I can see others who are experiencing similar problems, and there is no apparent fix.  Apple must know there is and issue with power management.  Is there anything I'm overlooking. 

  • 10. Re: no batteries available
    Grant Bennet-Alder Level 8 Level 8 (49,250 points)

    Is there anything I'm overlooking.

    You seem to be overlooking the concept that not all problems can be fixed by tweaking the software.

     

    This one, in particular, is a physical problem, and the guys at the genius Bar put their hands on these Macs all day every day and will have this one fixed in a jiffy.