... 4,flexible size(customer design) 5,wildly use in electronic bicycle 1, Appliance scopeElectronic bicycle, E-scooter 2, Product details ... 270 mm3, Product Advantages1, newness appearance to cooperated bicycle design.2, excellent environment resilience.3, Stable performance.4, ... Flexible size to meet the customer design needs.5, Full set of battery pack, PCB and ...