I bought a NIU SCOOTER this year 2023. I lost my job for the winter and I am forced to sell it. I have an additional battery that gives a distance of up to 120 km. I also have a speed controller so it is possible to increase the speed to 80 km/hprice for an additional second battery: 15,000 NOKSpeed controller up to 80 km/h 4000 NOKI was very pleased with the scooter!!!