Laptop batteries are terrible. Anyone who owns a laptop knows this. They last 1 1/2 to 2 hours during regular use, and sometimes even less than that. In addition, they tend to be the first component that needs to be replaced. Soon there may be an alternative power source for laptops. Fuel cell technology, which we all know is currently being used in new cars to improve gas mileage or do away with gas altogether, may be the future source of power for notebook computers. They use methanol cartridges for their power, which allows them to keep your mobile computer running for up to 9 hours. Although methanol is flammable, it would appear that these cartridges are safe, and soon you'll even be allowed to take them on airplanes.
New energy sources such as this will become more important as laptops begin to suck more and more energy. New models are coming out with dual video cards, 2 hard drives, and multiple DVD burners (my buddy has one, and he has yet to explain to me how he will ever end up burning more than one DVD at a time). Although processor speeds have pretty much leveled off and the focus is now on power reduction, like the AMD Turion series, they still use a lot more power than processors did a few years ago.
BBC NEWS | Technology | Fuel cells to change laptop use