Both batteries provide significantly better performance than the standard batteries that come with either the Eee PC 701 or Eee PC 900. Blogee has several detailed charts showing the differences. But in a nutshell, the extended batteries will provide 3 hour more hours of battery life if you’re doing nothing but watching video, and 4 to 5 hours of battery life if you’re surfing the web, or working with OpenOffice.org.

The prices are kind of high considering how cheap the computer is. And there are other down sides. The batteries protrude from the back of the unit a bit, making it both heavier and bulkier. And while Bluetrade offers a 1 year warranty, Asus has warned that it’s warranty does not cover damage caused by third party batteries. So if your batteries blow up, Bluetrade might replace them, but Asus ain’t going to replace your computer.