Today I went to toys r us and purchased the Nyko UBoost for the Wii U gamepad..for anyone that has it, I am confused as to how to use it..it does not come with any instructions..I just put it in the gamepad which was easy but I am charging it on my charging base and the uboost light is RED..not sure if that means that I have to keep on charging it til the light goes off..on the box it says on the back that the light is on when its fully charged but I just got it and its already fully charged? So if anyone has this accessory please let me know how to properly use it..Thanks