I recently stumbled across this http://www.laptopbattery.net/notebookbatteries_life.html interesting article regarding Li-Ion batteries and good habits to extend their life. It mentions something that had never occurred to me: when you leave your computer plugged in with 100% battery, the battery naturally loses a minute amount of charge while idling. The article says that when this happens, the computer provides a small charge to "top off" the battery charge. It says that this needlessly uses up charge/discharge cycles, which, over time, hurts your battery's capacity. One of the things I love about my new Mac is the fantastic battery life. Does anyone know if Macs "top off" the battery in a similar fashion? Is it markedly beneficial to the battery to remove it once it is completely charged?