just to share this: for almost 5 months (i think its really that long) of overclocking, my experience with battery life is awesome! in nokia's stock kernel of 250-600mhz, my n900 lasts up to 8hrs - 10hrs of stand-by with wifi and 5 IM accounts, and i think 2 hrs of web browsing plus video streaming. when i overclocked using enhance kernel for power users, with the Ideal settings of 500-850mhz up to 1150mhz, stand-by (with all activites same as above) lasts for 13hrs-15hrs between charging/replace battery! EDIT: i just looked at Conky and my uptime is 16hrs, 48mins and 3secs.