Considering the controller functions, this really isn't a surprise. It's about the same as the 3DS. My hope is that Nintendo makes this a moot point by packaging it with a suitably long power/sync chord. Anything under six feet is unacceptable. Ten feet would be preferable.
Wii U GamePad Sports Short Battery Life
Just when you get into your groove, the controller powers down. Update: Pitchforks down, everyone: it charges while you play.
After catching a glimpse of the Wii U's potential at Nintendo’s conference, some of the excitement is tempered by the raw facts on battery life. According to official figures from Nintendo, the Wii U Gamepad will only last for 3-5 hours on battery charge. Since most of its functionality shown at E3 involves players moving it in multiple directions and around the room, it may be tough to charge and play with the controller at the same time.
Potentially making matters worse, Nintendo has commented that various factors such as screen brightness could drop the battery life further. At this time it's not clear if concurrently charging the GamePad while playing will be possible, nor how long such a cable to do so will be.
Update: a NOA tweet has confirmed the GamePad can charge while you play.
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