Windows 7: How long does your 12 cell battery last?

Hi, can anyone who has a 12 cell battery for their laptop please tell me how long the battery lasts, and what laptop you use. I just want to compare different 12 cell batteries and how long they last according to the laptops they use. Thanks

I don't have a 12-cell laptop battery, but I just wanted to point out that there's cells and there's cells. The energy storage capacity of different "cells" used by different manufacturers varies widely, as does the current draw by different laptops. A 17-inch "aircraft carrier" laptop is going to consume a lot more juice than an Atom-based 9" unit with an SSD. Hence, their runtimes on a "12-cell battery" will be hugely different.

For what it's worth, I used to have an Asus 1000HE which ran for almost 10 hours on a 9-cell battery (Windows 7), before it was snatched away from me by a family member who was quite happy to resort to underhanded hardware acquisition tactics.

O Yea, true. Thanks for the input. But when you upgraded to windows 7, did you really notice a increase in battery life? thanks

Yes. It's mainly due to the "interrupt coalescing" done by Windows 7. Under Vista SP2, the same laptop was good for say 7 to 8 hours. Going to Windows 7 definitely made a very positive difference.