The added note revealed that battle pad is not compatible with the Wii MotionPlus adapter. As a result, the adapter has to be detached from the Wii Remote for the controller to work properly. On the other hand, the Wii Remote Plus should work perfectly with the Super Smash Bros. Turbo Battle Pad for Wii U.
The third-party pad is shaped similarly to the official first-party Gamecube controller. There are some noticeable differences as the Hori version has a bigger directional pad, three turbo settings along with short stroke L and R buttons.
The Turbo Battle Pads comes in two different variations in United States: one for Luigi and the other for Mario. Both are going to come out on the 21st of November, the same day as the release for Super Smash Bros. for Wii U. Purchase all three products right now on Amazon – Hori Battle Pad for Wii U (Mario Version) with Turbo, Hori Battle Pad for Wii U (Luigi Version) with Turbo and Super Smash Bros. for Wii U.