What should I do if the speed of Yuedi T70-3 four-wheel electric vehicle is slow?

Replace the battery of the electric vehicle to adjust the speed.

The specific method is as follows: 1. Replace the battery of electric vehicle and adjust the speed. Because the energy efficiency of old batteries is reduced, electric vehicles can't run fast.

2. Replace the motor bearing to adjust the speed. The motor bearing will be deformed due to stress, which will increase the resistance during driving, so the speed will be reduced.

3. Add lubricating oil to the front and rear wheel bearings to adjust the speed. Insufficient lubrication of front and rear wheel bearings will increase the resistance, which will lead to the decrease of electric vehicle speed.