Tom’s hardware guide just published a very interesting article on battery life for your laptop.

“Increased mobility is what sets a notebook apart from its desktop PC counterpart, but unfortunately, a laptop is only as good as its battery charge unless it is tethered by a cord plugged into a socket. A notebook’s worth and performance thus largely hinge on how well its components can make use of power. Users also expect their notebook’s performance to be on par with a desktop PC, while more PC computing power inevitably translates into a greater drain on the battery.”

Link: Toms Hardware Guide (mobility guru)