Amazon.com: Wilibl Hoverboard for Kids Ages 6-12 Electric Self Balancing Scooter with Built in Speaker 6.5" Wheels LED Lights Hover Board Safety Certified (Chrome Black) : Sports & Outdoors
change the battery of two wheels smart balance scooter electric. - YouTube
36v 4.4ah 4400mah Replacement Battery 2 Wheel Electric Scooter Balancing Battery For Self-balancing Fit 6.5 "7" - Rechargeable Batteries - AliExpress