Under What Circumstances Should a Car Battery Be Replaced?
2 Answers
Car batteries need replacement when their voltage is insufficient and internal resistance is high. Their functions include: supplying power to the starting system, ignition system, electronic fuel injection system, and vehicle electronics during engine startup. Car battery charging precautions: 1. Battery voltage below 10% of the rated voltage will cause battery discharge; 2. Avoid water entering the battery during charging; 3. Charge the battery directly without removing it to prevent data loss. Battery maintenance methods: 1. Start the car periodically to charge the battery; 2. Add distilled water or special replenishing fluid when electrolyte is low; 3. Regularly check if the small holes on the battery cover are ventilated during daily driving; 4. Check for signs of oxidation on the battery's positive and negative terminals; 5. Inspect all circuit parts for aging or short circuits.
Having driven for nearly two decades, I have firsthand experience with battery replacement. Under normal circumstances, a car battery should be considered for replacement after three to five years of use. The most common sign I’ve noticed is when the engine cranks very sluggishly or fails to turn over during startup, especially in cold weather. Last winter, it took me three attempts to start my car in the morning, and later tests showed the voltage had dropped below 12 volts—prompting an immediate battery replacement. Visually, watch out for bulging, cracks, or leaks, as these indicate severe aging. I recommend car owners perform a simple voltage test or use a battery tester every six months. Don’t end up like me, stranded at a remote gas station and waiting two hours for assistance. Timely replacement ensures peace of mind and safety, avoiding unexpected breakdowns on the road.
