I have the late unibody MacBook Pro. As stated in other threads, the battery life is not that great. Probably lasts about two-three hours. I use it around the house and away from power sources a lot. Since I use a lot of battery, sometimes I have to charge three times a day. I don't complain about the short battery life, charging it often doesn't bother me too much. But because of the short battery life, I picked up a habit (?) of charging it whenever possible. Even if the status is at 70% or something, I just plug in the power whenever I get close to the outlet. Is this a good habit? Or should I let the battery drain lower and charge it. Using this much batter should shorten by battery life, but I don't want to make it worse. How about leaving the charger plugged in overnight? What is the best battery charging method?