Eighteen hours is a long time. I’m on my laptop at least that long everyday, though I have to be plugged in. That power cord is like a leash, my friends and we are but chained dogs. Fujitsu wants to set us free with the new ProGREEN line.
The 14-inch Lifebook E780 has an 18-hour battery life. Yes 18 hours! There’s also the 15.6-inch Lifebook S710. Both are Energy Star 5.0 certified, with LED backlit screens.