Yongyuan electric four-wheeled vehicle has electricity, but DC has no electricity.

1, the whole vehicle is out of power-the main faults are battery welding, fuse burning, power cord falling off the battery socket, poor contact and converter damage. There won't be a big problem.

2. Don't run with power on-generally, check whether the brake handle is in the original position first. If the brake handle is disconnected, you can hold it by hand and drive. In addition to the above, turn around. The controller is damaged, the motor is damaged, and the hall is damaged ... In this case, everything except the power supply is likely to be broken, so you must find a professional to check and repair it for you.

There are some special circumstances: the car is stuffy, sometimes it goes and sometimes it doesn't go, the power consumption increases and the mileage is short. 1. The battery may be damaged. 2. Insufficient tire pressure. The brake is too tight.