Received another email from Richard Wu (rjtech) concerning battery size::
I had double checked from manufacturer's website and manual, they are all indicated it is 6-cell battery and they don't have an option for 8-cell. I am strongly believe that is a typo in gamepc website. You might want to call them make sure of it. The battery model we have here is BP-8050 (S). If they have the same number then it is 6-Cell.
Here is the link to Mitac, the manufacturer website,
http://www.mitac-mtc.com.tw/pics/CeBIT%202004/8050.jpg you can see there is no option for 8-cell.