I have a late 2008 15" Macbook Pro. Battery life is not spectacular (albeit better than any Dell or Lenovo I've used). When idling it lasts for a full 8-10 hours, easy. When I actually use it it lasts for about 3 hours only. Usage includes surfing the web, using Textmate for programming -- nothing really strenuous at all. I do mostly programming and text editing on the computer, and was wondering if those of you who are using the early 2010 model with i7's can comment on the battery life (eg. how long you get). Thanks!