Nope, it was almost never used until Splatoon released and kept clean and crisp, and when I started using the thing, it ALWAYS had connection issues and needed to be plugged in (as if that had something to do with it, even though it was fully charged always). Forget ever trying to use it without being attached to a power source, it just couldn't function, could not communicate. I believe it had to do with wi-fi interference of some kind since I was able to limit the connectivity issues by always being super close to the machine. I'd move it onto the floor near me while keeping the sensor bar directly in front of me and away from the DVD, Blu-Ray player, Amiboos, Skylanders, etc. Could just be a coincidence because it still would have issues but it was far less when I had everything pretty much directly around me within a couple feet. Could never play with the Wii U from my couch which is about 10 feet away from my TV, plugged in or not. Also, the Wii U is also a couple feet from the router, which I moved into the room just to make it work better for Splatoon.