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How much the car battery voltage is normal, and the battery voltage comparison table

Blog 2年前 (2021-12-16) 238 Views

The car battery voltage is usually 12V or 24V. Generally, the battery voltage of a car with a household gasoline engine is 12V. The working principle of a diesel engine is different from that of a gasoline engine and requires a higher voltage. Therefore, a 24V battery is often used.

However, the battery voltage of 12V is not fixed, and 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 when starting is not lower than 11V, it is considered a normal voltage.

(Battery voltage comparison table)

The battery voltage is too high or too low, will cause a certain impact. Normally, check the battery usage. Once the battery voltage is lower than 10.8V, you need to charge it in time. 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.

The battery can be charged by the generator while the car is running. 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, during the long-term parking of the car, it is best to start the car every other week, the generator will charge the battery, and generally need to idle for more than 5 minutes. In addition, when parking for a long time, it is recommended that the owner and friends remove the negative electrode of the battery, because the battery will naturally discharge even if it is not used, and this can prevent the vehicle battery from running out of power.

For the natural discharge of the battery, it is also called the self-discharge rate.YuanWithout any load, about 1% of electricity will be lost every day. 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. Therefore, try to avoid using electrical appliances in the car after the car is turned off, because using the electrical appliances when the engine is not generating electricity will always consume the battery power, and the battery loss will affect the car's start-up.