A rechargeable lithium-ion battery serves as the wireless GamePad's power source, but you might actually be spending a lot of time playing games with the unit's AC adapter plugged into an outlet. According to hardware details available on Nintendo of Japan's website -- information that, curiously, Nintendo of America omitted from its E3 site -- the GamePad's battery takes about two and a half hours to charge, and depending on the screen's brightness setting, lasts between three and five hours on a full charge.Photo Gallery: (6 images)
For reference, that's about how long the PlayStation Vita's battery lasts during gameplay. The GamePad has a lot of technology packed into it, but it's not actually processing gameplay; instead, the image on its screen is streamed from the Wii U console. Here's hoping the unit's charging cable isn't short or proprietary.
Check out some photos of both the black and white Wii U hardware in the gallery below.
Nintendo All-Access @ E3 2012 [Nintendo of America]
E3 2012 - Wii U [Nintendo of Japan]
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