http://forum.notebookreview.com/showthread.php?t=272634
unfortunately this Dell Mini 9, which sports an atom 1.6ghz, and an SSD drive only gets 3 and a half on a 3 cell which is typical of netbooks of this type
http://www.notebookreview.com/default.asp?newsID=4578
of course, the Thinkpad has a larger cell battery, but I don't think there are too many battery options for Netbooks yet.
There are several models in the link below which boast 7+ hours of battery life and I'm just looking at Asus models. Some even have regular hdds. So even if we equate this to "realistic" battery time, I would expect 4-5 which is still a great feat... no???
http://www.newegg.com/Product/ProductList....p;name=Eee%20PC




















