What are the maintenance methods for car batteries?

[ColemanLee]

Car battery maintenance methods include: 1. Start the car regularly to charge the battery; 2. When the electrolyte is low, replenish with distilled water or a dedicated replenishment fluid; 3. During daily driving, frequently check if the small holes on the battery cover are ventilated; 4. Inspect the positive and negative terminals for signs of oxidation; 5. Check all parts of the circuit for aging or short circuits; 6. Turn off electrical devices when leaving the car. The functions of a car battery are: 1. When starting the engine, the battery supplies power to the starting system, ignition system, and electronic fuel injection system; 2. When the engine is stopped or at low idle, it powers the car's electrical devices; 3. When the generator's output is insufficient, it can assist in powering electrical devices; 4. It mitigates voltage surges in the electrical system, protecting the car's electronic equipment; 5. It can store excess electricity generated by the alternator.