I mentioned this in another comment - I don't have an exact number, but I can take it to an all-day conference and use it normally without worrying, which is pr

I mentioned this in another comment - I don't have an exact number, but I can take it to an all-day conference and use it normally without worrying, which is probably more indicative than "batter tests", anyway. I was considering the Chromebook at one point, but I've heard mixed things about its support for ssh (connection reliability), so the Ultrabook seemed like a better choice even as a dumb remote terminal.