WowWee Store WowWee Store: Rechargeable battery kit for MiP robot
WowWee MiP Robot Black/Silver 821 - Best Buy
Putting LiPos into your MIP robot | Hackaday.io
Amazon.com: WowWee MiP Arcade - Interactive Self-Balancing Robot - Play App-Enabled or Screenless Games with RC, Dancing & Multiplayer Modes : Toys & Games