I am not here to just find a solution to extract few minutes out of it so as I can watch movie. My last computer just worked fine for first few years but the batteries started holding lesser charge until I had to have the chord pluged in all the time. Could somebody help me with some ways to keep computer batteries lasting as long as possible. Is it fine to let it run down and then plug it in after it is used? Or it is good to keep it always plugged in? I would really appreciate your replies on this. Thanks.