Here are the past few tech devices I've owned along with their battery life numbers... Asus C200 (Chromebook) (Current Laptop): 6 Hours on Full Brightness with Videos, 10 to 15 hours with 60% brightness and minimal video streaming LG Nexus 5 (Smartphone) (Current phone): 8 to 15 Hours, depending upon use Motorola Droid Razr Maxx (Smartphone) (Previous phone): 24 to 48 Hours with mixed, sometimes heavy use I've owned laptops that would only last three or four hours on a charge and smartphones that would only last 7 to 10 hours per charge. I don't think I can ever go back because 10+ hour battery life on a laptop is incredibly convenient. Even a phone that lasts 10 to 15 hours is good enough for me, although I still miss the Razr Maxx. What're you using? What have your battery life figures been like?