Hey guys, Just wondering, whenever I use my macbook unibody at home, I have it plugged in most of the time. When I take it to school, I don't bring my plug. When I go to sleep, I generally unplug it and put the macbook to sleep. Should I keep it plugged in even though I closed the lid whilst I sleep during the night? Or should I keep unplugged it every night when I close the lid? Also, I do calibrate my battery once a month. its at 93% after 43 cycles. Thanks for the help!