Qlife Cityone Electric Bike for Adults 26"" Step-Through 22MPH Ebike with 2.1"" Tire UL2849 Certified Built-in Removable Battery Peak 750W Motor Ebikes with 7 Speed Commuter E Bicycle Black1

Built-in Removeble Battery:The electric bike built-in battery in this e-bike is UL2849 certified for anti-theft while over-temperature over-voltage and over-charging protections ensure reliable performance and long battery life(40 Miles Range | 36V). Its battery life is significantly extended by 20% compared to ordinary batteries.