Buying a new car mainly considers 4 aspects: price, frame, battery, and after-sales. There are also other added values, such as the quality of the paint, the quality of the bumper, whether it is a new car, the charger, raincoat, and helmet that come with it.
As far as the frame is concerned, it is difficult for a car buyer to distinguish whether the frame is good or bad, and can only choose a car according to the suggestions of the car shop staff.
It is better to choose a big brand of battery 12a. Now the quality is similar, and the price difference is not big. The large battery is 20a, a group of five, the best battery is 200+ worse than the worst, as far as I know. Go to a newly opened or unfamiliar store to buy (mainly newly opened), don't listen to him, just choose a big brand battery, at least the after-sales can be guaranteed.
After sales, it depends on the boss and the manufacturer. Like the current battery after-sales, it can only be replaced after half a year for maintenance. If you have to replace it with a new one after half a year, the master can't do it, unless he pays for it himself, but it's impossible. After-sales package 4 large pieces, motor, battery, controller, charger.