Hello, I sell my electric scooter. The scooter has about 2 years and I changed the battery last summer months ago. With 1 full charge, I can make the round trip Sanlitun - Wudaokou, which represents about 50km. Maximum speed is 50km/h. The price is 1500RMB. No single problem with it. You can see it in Shuangjing.