What are the functions of car batteries and how to prevent failures?

　　1. The role of car batteries

　　1. When starting the engine, provide a strong starting current (about 10A) to the starter.

　　2. When the generator is overloaded, it can assist the generator to supply power to electrical equipment.

　　3. When the engine is at idle speed, supply power to electrical equipment.

　　4. The battery is also a large-capacity capacitor, which can protect the car's electrical appliances.

　　5. When the generator terminal voltage is higher than the electromotive force of the lead-acid battery, part of the electrical energy is converted into chemical energy and stored, that is, charging.

　　2. How to prevent car battery failures

　　1. Charge the deeply depleted battery with a small current outside the vehicle.

　　2. Test vehicle and battery-related equipment to solve leakage and charger problems.

　　3. Frequently check the status of the connection between the wiring harness and the terminal post to keep it clean, dry and securely connected.

　　4. Develop good car usage habits and avoid excessive use of electricity when the engine is not running.

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