My macbook pro is the 13 inch model from summer 2009.
Has ran great for 4 years, but for the past few days it has been stuck at 100%. I know that it is not 100% battery because i drained the battery on purpose to see if it would reset.
It has not changed and I was wondering if anyone knew anything I could do to fix it.
MacBook Pro, Mac OS X (10.6.8)
Try resetting the SMC and PRAM:
http://support.apple.com/kb/HT3964
http://support.apple.com/kb/HT1379
Ciao.
Hi joey,
Go to the Apple menu > About This Mac > More info > Hardware > Power and see what it says for the condition of the battery and the number of cycles. It may be that the battery has lived it's life and is dying. You can try an SMC reset, but if the batt is dying, it isn't going to help. A PRAM reset isn't going to help no matter what (but it isn't going to hurt, so you can try it if you want to).
The PRAM reset actually fixed the problem. Thanks everyone
For anyone else searching for this that has the same problem that I just figured out...
Mine was stuck at 100% when I knew it was not. I checked the solutions above but was pretty sure I did not have to do something that deep to correct it. Just now I realized that my UPS battery controller had been plugged into the hub. While I was on the thunder cable dock, the fully charged UPS battery was displaying in the menu bar instead of the macbook's battery status. I pulled the plug and the indicator went back down to 5%
Battery Staying at 100%
