Before you can use the Xbox 360 Wireless Controller with your Xbox 360 console, you need to insert batteries into the controller and introduce the controller to the console by wirelessly connecting the two.
The wireless controller uses only the AA battery pack (provided) with either disposable AA batteries (not included) or the Xbox 360 Rechargeable Battery Pack.
To insert batteries into the wireless controller:
1. Press the tab on the top of the AA battery pack and pull down to detach it from the controller.
2. Insert two new AA (LR6) batteries with their positive (+) and negative () ends positioned as shown on the underside of the battery pack. For best performance, AA rechargeable batteries are not recommended.
3. Slide the AA battery pack back into place on the controller and push in to lock.
Before boarding any aircraft or packing the wireless controller in luggage that will be checked, remove any batteries from the wireless controller. The wireless controller can transmit radio frequency (RF) energy, much like a cellular telephone, whenever batteries are installed.
The unit has a rechargeable battery unit inside it, the size of two AA batteries. You have to buy a recharger set SEPARATELY that lets you charge up while you play. In essence you plug the charger into the back of the controller - and the other end into the USB port in the front of the XBox 360 unit. So you play with the controller 'wired' as it charges up. When it's fully charged again, you just pop off the wire and keep playing.
The range of the wireless unit is 30', which is probably much further than anybody is really going to even try playing a game at. The wireless is much easier on your hand - no cable holding you down - plus it's a great help in keeping your gaming area organized. You can easily pass the controller from person to person, and visitors can come and go without tripping over wires.