It looks like one day is pretty much the average for the 8830, that's what I get too. I had the 8703e with the Sedio extended battery and got upwards of 3 days or more of use, does anybody know if/when they will do a battery for 8800's? I will hate giving up the nice thin design of the my spanking new 8830, but one day is pretty much a drag, especially if you have forgotten your charger... Not that any of us would ever do that...
I can't wait for that Tesla inspired battery that can be charged wirelessly!