I use my macbook pro mainly at home in my room where it stays plugged into its charger nearly all the time and i never turn it off, just put it to sleep. I will occasionally restart the mac for good measure but thats about it. The battery normally stays at full when i go back to it after a night of sleep or whatever else. However, when i woke up today i noticed my charger led was orange and not green indicating it had lost charge, i opened it and found it needed 14 minutes of charging so prolly in the low to mid 90 percentile after being in sleep mode for around 7 hours. Why would it lose power while sleeping AND on the charger. Also is keeping it powered on and in sleep so mode so much a good idea? How often should i let my battery cycle down and charge again? Thanks for all your help!