Laptops

How long will the battery last on the flight? I have the screen brightness way down low – which is kind of fitting since the lights are out and window shades drawn. Can’t remember how long I’ve been on for now but I’m still showing 3.33 hours left. My next laptop may be one of those with the even longer battery life. One of the ones I looked at recently, a Vaio ultra-light is reported to have a 9 hour battery life – although reviews suggest it is 6 – which is still fantastic!