Under What Circumstances Does a Car Battery Need to Be Replaced?

[DeJoshua]

Car batteries need to be replaced when their voltage is insufficient and internal resistance is high. The battery is a consumable component in a car, and its service life decreases with the increase in charge and discharge cycles. During maintenance, professional technicians should use instruments to measure the battery's internal resistance and voltage. If the values do not meet the standard, it means the battery needs replacement. Insufficient battery voltage may cause difficulty in starting the car or even prevent it from starting. Starting a car requires spark, gasoline, and air. The starter motor drives the engine to rotate, the spark plug ignites normally, the starter motor works properly, and the fuel pump operates correctly—all of which rely on the battery.