Product Specifications:NameParametersBatteryLithium-ion battery 36V 4.4AhCharging Time2 - 3 HoursRating Output Voltage/Current42V-2AStorage temperature0°C-50°CWorking Temperature0°C-40°CCharging Temperature0°C-40°CMax climbing angles15°Min turning radius0°Tire size6.5inchTire typeSolid rubber tiresMotor power250W*2Packing size64*25*25cmPackage Included1 x Two wheels hover board1 x Power supply charger1 x ManualUL 2272 standard ,Website:http://www.sz2wheels.com, electrical systems for self balancing scootersPlastic materials enclosure:1)94 V-1 flame rating2)Minimun RTI with impact of 80°C3)UV and water exposure rating4)Minimum IP ratings: IPX4Metallic Material: corrosion resistantElectrical insulation material: pass UL 746CBattery pack:Charge:1)Over charge protection2)Over temperature protection3)Over current protectionDischarge:1)Over discharge protection2)Over temperature protection3)Over current protectionMotor:Over current protectionOver load protectionMotor locked rotor protection when motor winding temperature highCharger:UL 60950 standardOver voltage protectionShort circuit protectionOver current protectionOver temperature protection