Protection measures: Inclined protection: when the inclined degree over 45°, the machine will stop working! Speed limit protection: when the speed over 12km/h, the front of the pedal will raise up and forbid accelerating again! Low battery protection: when the surplus electric power is roughly 15%, the front of the pedal will raise up and slow down  gradually until it stop! 14-inch parameter  Size and Weight  Length: 41.3 cm  Overall Width: 17.0 cm (pedal folded state) 38 cm (pedal expanded state)  Total Height: 45.5 cm  Weight: 10.5 kg  Material  Body: High strength ABS material  Body surface material: advanced automotive paint  Cushioning: Nano Silicone  Wheel: heavy alloy wheels  Pedal: aluminum collapsible pedals  Performance Parameters  Speed: 16 km / h  The full electric biggest mileage: 17-20 km  Maximum tilt capability: 25 ° slope  Charging time: 45 minutes fast charge / full charge 90 minutes  Maximum load: 110 kg  Drive mode: Single-wheel direct drive  Powertrain: by a variable speed electronic motor control, direct drive  Motor: Brushless DC Motor  Battery equipment: imported lithium ion / 130 Wh