XB360 Power Base Induction Charger Product Details
The Power Base simultaneously charges up to 2 of the included Lithium-ion rechargeable battery packs designed for the original Xbox 360 controller, using wireless induction charging. You can charge the 2 battery packs by themselves or while connected to controllers. It also features LED charge indicators that tell you the charge status and a Power on/off button for saving energy when not in use. Charge from any power outlet using the included AC adapter.
Additional Resources: Product Manuals