The wii charger is a battery recharger that does not require wires! It truly amazing because these Wii inductive chargers provide rechargeable batteries. Just plug in the rechargeable batteries and place the controller on the pad. It works from magnetic fields to charge your Wii remotes fast and easy! When the wii remotes are ready to go, the LED charger light will turn from a red, to blue color. The Wii chargers are so useful and so much simpler to use! Instead of having to use all those batteries, it's a lot cheaper too!