Glad to know that. Interestingly, I only saw one review that said the battery lasted 8.5% longer, whatever that means. But I assumed that it would be about half an hour longer.
With full brightness lasting 1 hour longer, that to me is significant.
another review stated that playing a quicktime movie, it lasted about 1.5 hours longer, from 5:15 to 6:45.
I had a 17" 2010 model and it's being replaced b/c of a dead pixel. Now with the microcenter deal, I'm wondering if I should get the 2010 model or not, b/c in the short time that I had it, 2 days, I found the runtime to be 4 hours surfing the internet reading ebay, craigslist, cnn (no videos), typing word, and checking email. Really, I measured it. So I was very disappointed.
I had the chance to use a 2009 for a day, and I was measuring and I got 5 hours doing the same thing, so 2009 > 2010 for me, but intuitively that did not make sense, but that is what I measured (not perfectly scientifically, but I used it for about 2 hours and took note of the discharge rate (regardless of what the meter said) and it extrapolated to 5 hours. The 2009 model had 150 cycles on the battery, the 2010 had 2.
The $1599 microcenter deal has me on the fence now. 1 hour is significant; my own informal tests that were not rigorous showed the 2009 to be better, if anything. And I'm wondering if the i5 processor is really a power hog, b/c some tests on anandtech showed the i5 processor on the 15" doing worse in some battery situations than the core 2 duo 2009 model.