Originally Posted by http

The point of having long battery life is to use it on the road, and to be able to use the notebook on your knees, or on a small cafe table, or on the plane. Notice how the girl in the ad sits at a friggin office desk? She could just plug the notebook into the plug socket. You don't want to carry that thing with you AND have to try placing it somewhere (probably near the notebook as well since the cable is prolly not that long)