I had a Sony Clie with WiFi access a couple of years back which was great in concept, but I found that surfing the web or accessing email while connected to WiFi drained my battery very rapidly - as I recall ten minutes or so of web surfing while taxiing on a runway would eat up as much as 50% of my battery life. I am interested in knowing what battery life is like on the 700w for people who are WiFi power users...