2 Pack Rechargeable Battery for Wii Remote Controller, TechKen x 2800mAh Batteries with Charging Station Dock (Black)

The third-party product, it is designed for Wii remote controllers. LED indicator light: LED turns Red while charging, and turns Blue when fully charged. Fast and stable charging: Fast charging speed save your time, stable voltage save your Wii controller Dual stable charging port: They support 2 will controllers be charged at the same time. 2 rechargeable batteries: Big capacity batteries for multiple time use. Note: Only support 5V/1A adapter(Not included), DO NOT use the adapter over 5V.