Open System Profiler, click on the Power entry. Note what is reported about your battery. It's quite possible the battery is actually defective. Also, see the following:
Use and cleaning of power adapter with MagSafe connector;
Troubleshooting Magsafe power adapters with stuck pins.
If none of the above helps, then you will need to contact AppleCare to see if you can get a replacement. Click on the Contact Us link at the bottom of this page to find the AppleCare telephone number.
Okay here is the battery information from system profiler:
Serial Number: DP-ASMB013-3575-1d61
Device name: ASMB013
Pack Lot Code: 0001
PCB Lot Code: 0000
Firmware Version: 0102
Hardware Revision: 0300
Cell Revision: 0100
Charge remaining (mAh): 4177
Fully charged: Yes
Full charge capacity (mAh): 4197
Cycle count: 413
Battery Installed: Yes
Amperage (mA): 0
Voltage (mV): 12522
Not quite sure what any of this means........
Okay so I read the articles and cleaned the power adaptor. Still the same result. *I did forget to mention that the LED on the power adaptor stays lit up green. HOWEVER, each time I disconnect the power adaptor from the computer, it shuts down and I am unable to restart the computer unless it is hooked back up to the power adaptor AND I press the power button on the computer.
I think basically the battery just is done. It has 413 charge cycles. Average for these batteries is around 500 cycles. Unless there's a problem with your MagSafe connector (dirty contacts) or the connector on the computer (dirty contacts as well) then I'm not sure what to tell you at this point. The battery still appears to be pretty healthy given the number of charge cycles unless these are spurious readings. Have you ever calibrated the battery?
My suggestion is to call AppleCare or take the computer to a local Apple repair center and let them check things out for you to determine if it's just that the battery should be replaced or if there are other more serious problems.
My name is Thomas and I just moved to Santiago, Chile. I also purchased my computer in December 2006 and just this morning the same thing happened. It was exactly as you described. My computer says it is completely charged but as soon as it is disconnected it immediately dies. I was hoping you could keep me posted on how you handle your situation because I have tried everything and nothing seems to work. There is not an abundance of Apple Stores in Chile so this could be really inconvenient. I use my computer every day for work and so I hopefully won't have to send it anywhere. Yikes. Again, I would really appreciate an update from you or any suggestions you might have stateside. Thanks so much. Good luck!
You have a battery with almost 400 cycles. Average life is perhaps 500 cycles. I'd say you just need to replace your battery.
If your battery had less than 80% full charge and less than 300 cycles you would have a case for a replacement. But in your situation just go buy a new battery. Apple will not replace yours based on the number of cycles already accumulated.
Okay so I went to the Apple store today and the "Genius" checked the battery life with a program that was installed on an ipod. He plugged the ipod into the computer and ran the battery test. He showed me that I was charged 100% and that my battery was still (barely) showing up in the green/good area. However, he put a different macbook battery in and immediately my computer started up without the power cord attached. Long story short I shelled out $129.00 for a new battery and all is well.
I was past my warranty otherwise he said the battery would have been covered. He also said that if the battery is not always charging to 100% (if it stops at 98 or 99) then it is a sure sign that the battery is a goner. He indicated that these batteries get between 300-500 cycles and that just like humans there is no magic number as to when they die. Considering that the guy beside me somehow lost his whole hard drive, I felt pretty lucky to only be losing $129 bucks.
Happy computing, hope this helps.
On the 10th of October I did a couple of software updates:
Security Update 2008-007 (1.0)
Restart and worked for some time, then suddenly it shutdown and does it either plug or unplugged with battery life and cycle count 39.
Read some posts and did Battery Update 1.2 and also a Reset of the System Management Controller (SMC).
I wonder if anybody else has continue to have this issues ?