Nintendo has filed for a patent covering a possible Wii U controller dock, or docking station, as the patent application image shows. The patent image was spotted at gaming forum NeoGAF, and it could very well be a dock that’s included with the Wii U controller and console.
The Wii U tablet controller has a built in, non-removable battery, and will be charged with a USB cable that connects to the front of the console. The pictured tablet dock above would certainly make charging more hassle-free, and judging by the image, it appears as a simple construction that can be made cheaply enough to be included with the Wii U console and controller. It certainly doesn’t seem like something that Nintendo would sell separately, unless it has some extra features.