This item is compatible with charging Wii controllers. It features 4 charging ports, allowing you to charge up to 4 controllers simultaneously. Includes 4 matching rechargeable cell packs, eliminating concerns about power availability. Features: - Charges 4 controllers at the same time - Equipped with impulse voltage circuit design for efficient charging - Uses high-capacity Ni-MH cells - Simple and convenient to use - Keeps your setup organized and tidy Specifications: - Color: White - Package Weight: 306g / 10.79 ounces - Package Size: 200 x 100 x 55mm / 7.87 x 3.94 x 2.17 inches User Manual: 1. Plug a DC 5V power source into the input port. The indicator light will turn blue. (To disable the light, switch to "Off". To enable, switch to "On".) 2. Insert 1–4 of the included rechargeable cells into the controller slots. The light will turn red during charging and blue when fully charged. Package List: - 1 x Charging Stand - 4 x 2800mAh Rechargeable Cells - 1 x USB Cable Note: Wii Remote controller not included