Amazon.com: UCEC Wii U Gamepad Battery, Wii U Accessories 3600 mAh Wii U Battery Replacement Rechargeable Battery Pack Compatible for Nintendo Wii U Gamepad : Video Games
Tuto : Changer la batterie du Gamepad de la Wii U – Neitsabes
Amazon.co.jp: Wii U GamePad Battery Pack 3600mAh High Capacity : Electronics
Nintendo Wii U GamePad Battery: Replacement Part #ARR-002
Hands on: Official higher capacity Wii U GamePad battery and Wii Remote Quick Charge Set - Vooks