Ok, from what I am seeing there is a problem with power supplys on e-maichines, and discharging the batteries actually
harms the life to the battery. The question here is, is it the power supply, or is it the batteries? Download and install this
http://www.softpedia.com/get/System/...-Control.shtml
(Stolen from TheMatts sig

)
Post the stats of the notebook.