I had my computer fully charged and I put it on sleep but the next day it was dead. Any explanations?
MacBook Air, OS X Mountain Lion (10.8.2)
You may check the battery condition at Power under System Profile if the battery needs replacement.
Probably computer was not in sleep mode.
Keep it charging for a while.
Option click the battery icon in the menu bar. Condition should say "Normal".
If not, try reset SMC. If that does not help, Contact Apple.
Reset SMC. http://support.apple.com/kb/HT3964
Choose the method for:
"Resetting SMC on portables with a battery you should not remove on your own".
Best.
Battery dying
