What are the reasons for no response from the car after jump-starting?

[FelicityFitz]

There are two reasons for no response from the car after jump-starting: one is that the battery terminal clamps have come loose, and the other is that the battery is completely drained. The principle of jump-starting a car: It involves using an external device to transfer the stored electricity from another vehicle's battery to the car with a depleted battery, which is then used to start the vehicle. Once the car starts normally, the external device can be removed, allowing the car's charging system to restore the battery's charge. Causes of battery depletion: This usually occurs due to poor usage habits during regular vehicle operation. Specifically, turning on the headlights or ignition switch without first starting the engine can cause the car battery to drain rapidly.