It may be the quality of the battery. The electric energy consumed by car startup requires the car generator to run stably for at least 25 minutes before charging the battery. When the car is idle, it takes an hour at most to make up for it.
Maintenance method of battery car:
1. The discharged battery should be charged in time, and the shelving time should not exceed 12 hours.
2. Check and adjust the front and rear brakes. Before using the electric bicycle, check and adjust the front and rear brakes. The front brake is controlled by the right brake handle, and the rear brake is controlled by the left brake handle. The adjustment of the front and rear brakes is suitable for reliable braking when the left and right brake handles reach half. If the brake pads are excessively worn, they should be replaced in time.
3. Before using the electric bicycle, check the lubrication of the chain. And observe whether the chain shaft rotates flexibly and whether the chain link is seriously corroded. If it rusts or does not rotate flexibly, add proper amount of lubricating oil, and replace the chain in severe cases.
4. Before driving, check tire pressure, handlebar steering flexibility, front and rear wheel rotation flexibility, circuit, battery capacity, motor working condition, lighting, horn, etc.
5. The battery should be stored in a cool, ventilated and dry place, away from corrosive liquids and gases. When stored, the whole vehicle should be upright, the tire pressure should be sufficient, the body should not be loaded with heavy objects, and the batteries should be stored separately.