Nintendo's high-capacity Wii U GamePad battery comes to the US, $32 for 8 hours of playtimeBy S. Buckley, 12.21.2013
Nintendo Wii U gamepad not for sale separately in US until games support multiple controllersBy B. Gilbert, 09.13.2012
Dual GamePad support won't be coming to Nintendo Wii U until 'well after launch'By E. Alvarez, 06.13.2012
Nintendo: two Wii U Gamepads will work on one system (update 2: but at a cost - and now with video)By J. Fingas, 06.05.2012