What is the voltage of the car battery?

If the voltage of the car battery is lower than 11.5V, it means that the battery is in a state of power loss, and the battery needs to be charged as soon as possible to avoid major damage to the battery. When it is used up, it needs to be replaced with a new battery, and charging is useless.

When charging the battery, if the observation port of the battery is green, it means that the battery is in short supply, and the battery can continue to be used as long as it is charged in time. If the color of the battery inspection port is white, it means that the battery is in a state of serious damage, and the battery cannot be used after charging, and a new battery needs to be replaced as soon as possible.

Ways to extend battery life

1. The time and frequency of ignition of the vehicle need to be well controlled. The appropriate ignition time is about 3 seconds each time. If there is no ignition, then restart the ignition again after about 30 seconds. Do not start the ignition immediately. The number of sparks should not be very frequent, otherwise the battery will be severely depleted;

2. In normal times, it is necessary to check and clean the wiring and terminals of the battery. The terminals of the battery are relatively easy to oxidize and damage, so it is necessary to apply some grease to the terminals, which can provide better protection. effect;

3. Do not keep the battery in a state of power loss. If the power is low, it needs to be charged in time. If the vehicle is rarely used, you can unplug the negative pole of the battery, so that the battery is not prone to power loss, thereby prolonging the use of the battery life.