What are the effects of car battery disconnection on a vehicle?

[MacJoanna]

Disconnecting a car battery has the following effects on a vehicle: 1. Without power supply from the battery, the starter cannot provide the necessary power to start the engine, rendering the vehicle unable to operate normally; 2. Once the battery is disconnected and the vehicle is stopped, the alternator ceases to function, leaving the entire vehicle without power. Consequently, the vehicle's anti-theft system becomes inoperative, and the alarm sounds and lights will no longer function. The functions of the car battery include: 1. Providing power to the starting system, ignition system, and electronic fuel injection system when starting the engine; 2. Supplying power to the vehicle's electrical equipment when the engine is off or at low idle; 3. Assisting in powering electrical devices when the alternator's output is insufficient; 4. Mitigating voltage surges in the electrical system to protect the vehicle's electronic devices; 5. Storing excess electricity generated by the alternator.