Analysis of the judgment method of whether the battery should be replaced

1. Battery appearance inspection The appearance of the battery is relatively regular. If you open the front cover and find that the battery of your car is clearly bulging or deformed, it must be replaced. In addition, observe the position of the battery terminal. If there is a lot of white or green powder around the terminal, this indicates that your battery may be faulty. This is easy to understand, because these powders are mostly the oxides of some batteries. Generally, the quality of high-end car batteries is better, and these conditions will not occur. 2. Check the observation port Most batteries have an observation port, which generally exists in front of the battery. The observation port is generally composed of three colors: black, yellow and green. Black means it is about to be scrapped and needs to be replaced immediately, yellow means power is lost, and green means it is in normal use and has sufficient power. However, what I want to explain here is that the information on the observation port can only be used as a reference after all. Many car owners have left messages saying that the information on the observation port is not accurate. 3. Test the battery yourself. First of all, we must understand that the voltage of the car battery is mostly around 12V, and only after the engine is started will it be increased to between 13-14V, which are all normal voltage values. We can use a voltage measuring instrument or a multimeter to measure the voltage of the battery. In addition, some on-board charging adapters also have a voltage value displayed on the screen, and we can also observe the voltage. If the engine is not started, the voltage is less than 12v or the voltage is less than 13v after starting, it means that the battery power consumption is serious. Judging the battery condition by the battery voltage is still a more commonly used method. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous post: Compared with UPS lithium battery pack, which lead-acid battery has a longer lifespan?