PATENTED BATTERY SAFETY TECHNOLOGY: The long-lasting, durable LiFePo battery lets you shred up to 3 miles per charge. It fully recharges in about four hours and has a kid-friendly design featuring an easy-to-read battery indicator, so you'll never run out of juice. LiFePo battery does not contain active Lithium-Ion. Unlike Lithium-ion, our battery is noncombustible and nonflammable from puncture, damage, or charging when used as intended. It can take a beating. SOMETHING NEVER EXPERIENCED BEFORE: The self-balancing zip board Shuttle combines traditional hoverboard and skateboard design, making it easy to shred like a pro skateboarder, surfer, or snowboarder. Carve up the pavement with cool tricks, boosted acceleration, and swag. The smart self-retracting assist wheel helps you learn in just a few minutes.