Is 13 Volts Normal for Car Power Generation?

[JaxsonLee]

This is the battery voltage, not the generator's power output. 13V is still considered normal. The reason for high voltage in a car generator is usually a malfunctioning voltage regulator. It is necessary to inspect the generator's regulator and replace it according to the generator model. If the generator's voltage regulator fails, causing loss of control or abnormal voltage detection circuitry, the generator may produce excessively high voltage. Engine voltage malfunction: When the generator's voltage regulator fails, the generator produces excessively high voltage, which increases with higher RPM. If the voltage is not extremely high, it may cause the generator to overheat, battery overheating, bulb burnout, or charging circuit damage. In severe cases, it can lead to battery swelling, explosion, or complete failure, charging circuit fires, or even ECU damage.