I've got my N900 10 days ago. The battery lasts between 12-24 hours. 12 hours is with heavy usage: - 2-3 hours surfing - email check every 5 mins - wifi scan every 10 mins - foreca widget (1h interval checks), load applet - 1h internet radio - 10 min phone calls (several calls) - 4-8 photos with flash - 2-3 mins video recording - 10h wifi connection - 2h 3G connection Usually I am doing about 16-20 hours with a fully charged battery and I am pretty happy with it. After reading this thread I've done some tweaks which will improve battery usage. I think this will help a little more. With some tweaks and light usage one should be able to do 30+ hours on a full charge. For me 18 hours with moderate usage is very acceptable. Anything more is a bonus