In the past, we've had some ups and downs with regrd to Asus battery life claims. But here's some good news. Possibly great news, depending on how important battery life is to you. During our real-world battery run down test, the Eee PC 1215N managed to last 267 minutes on the Intel integrated graphics. Of course, that figure would be cut down significantly if you run on the discrete Ion 2 graphics set, and somewhere in between if you mix the use of the two. But still, knowing that it's possible to squeeze just under 5 hours out of this netbook if you have to, is really nice actually.
The only real issue we have is that our press material claims that the 1215N should last up to 7 hours. We can't figure out how you'd ever get 7 hours from this unless you always had Wi-Fi disabled, had the screen set to minimum brightness and really did nothing at all to tax your machine. At that point, you probably aren't even "using" your machine. But still, compared to the Eee PC 1201N, we're seeing an increase in battery life, and it's always great to see performance go up while battery life is extended. That's a hard feat to accomplish, so kudos to all involved for making it happen.