Is my battery voltage 11.9 normal?How many volts is the car battery

Generally, the battery voltage of a car is 12V, and the voltage is not fixed, and it is generally larger. Under normal circumstances, the battery voltage before starting the car is between 11.8V-12.8V, and the battery voltage after starting is between 13.2-14.8V. As long as the voltage at the start is not lower than 11V, it is considered a normal voltage.

The battery voltage is too high or too low, will cause a certain impact. If the battery voltage is too low, the car will be difficult or even unable to start; if the battery voltage is too high, the battery may be damaged. Therefore, you should always check the battery usage. Once the battery voltage is lower than 11V, you need to charge it in time.

In addition, the car battery has a self-discharge feature, it is not connected to any electricalYuanWithout any load, about 1% of the electricity will be lost every day, which is also called the self-discharge rate. The self-discharge rate is directly related to the quality of the battery. The better the battery, the purer the electrolyte and the lower the self-discharge rate.

If the car is parked for a long time, it will easily lead to the loss of battery power and cause the car to fail to start. Therefore, when it is necessary to park for a long time, it is recommended that the owner and friend remove the negative electrode of the battery, so as to avoid the battery shortage of the vehicle. In addition, during long-term parking of the car, it is best to start the car every other week, and the internal generator can charge the battery when the engine is idling.