Ok, I can report on the battery life so far.

I gave the thing an initial charge yesterday at 1pm, and then started surfing on it for about 4 hours or so, Installing apps (ssh, nmap,etc), setting up 3 email accounts, loading music and videos over wifi. And I have used it for 2 hours as a MP3 player in my Jeep.

The thing is still 90% charged!

I was crushing it with wifi and disk RW, I would have figured it would be at 50% or so...