It´s being discussed in many other threads. But I get approx 5,5 hours
on full brightness, bluetooth off and free use of various light programs
(i.e. safari/firefox, word et cetera).
If I use it under strain (gaming, photoshop, DVD et cetera) I get approx 4 hours.
My main use, however, is word. At one step down from full brightness and with both bluetooth and airport off, I´m at 7+ hours
I would say the battery is phenomenally good compared to other notebooks, but not more than ok (and frankly a wee dissapointing) compared to the promised 8 hours from Apple.
P