Gaming laptops have traditionally had to compromise on battery life, which typically lasted as little as two hours of nonstop gaming. You also couldn't play most complex games -- GPU- or CPU-intensive ones -- on battery power. Processors would get throttled back and screens dim during hard-core gaming sessions, so a laptop that felt nimble when connected became a slog on battery power, turning your epic battles into battles of frustration. That's been changing recently, as Intel, AMD and Nvidia have concentrated on improving their power management technologies. No, you still can't play for 10 hours on battery power, but now you can find some great gaming laptops with 10-hour battery lives -- albeit not for playing -- to make gaming on the road more feasible.