I have a laptop with a 9-cell battery but I basically use my computer as a desktop. I have separate keyboard, and mouse which I use. I have had my computer since Aug 20th, and have not yet used the battery. Is there something I should do in order to maintain my battery life? My friend told me to drain it once a week and fill it back up, and I have also heard that leaving my computer plugged at night is bad. Is this true? And what should I do regarding my battery if im not really planning on using all that much? I will use it on vacations and stuff in the future, and at University. for those reasons,i have to look for some sites to my laptop battery.. Can you give me some good ideas?