Analyze the key and life span of lithium battery selection

Lithium battery selection key 1. Do not buy batteries that are lower than the average wholesale price of the mall. 2. Products that have not passed the market test for more than 2 years. 3. Don't buy batteries that are not equipped by electric vehicle manufacturers. 4. High-priced batteries, if they are not processed by a major factory, do not buy them. 5. Resolutely refrain from buying batteries that have changed the national standard. How long is the life of lithium batteries for electric vehicles: How many years can lithium batteries for electric vehicles be used? I believe that most customers have heard that the life of a lithium battery is 500 times, and 500 times of charging and discharging. After this number of times, the battery will die. In order to extend the life of the battery, many friends are fully charged every time. Only charge when it is exhausted. Does this really extend the life of the battery? The answer is not fixed. The life span of a lithium battery is 500 times, which does not refer to the number of times of charging, but a cycle of charging and discharging. A charging cycle means the process of using all the power of the battery from full to empty, and then from empty to full. This is not the same as charging once. For example, a lithium battery uses only half of its power on the first day, and then charges it slowly. If it is still the case the next day, that is, use half of the charge, and charge it twice in total. This can only be counted as one charging cycle, not two. Therefore, it may usually take several times of charging to complete a cycle. Every time a charging cycle is completed, the battery capacity will be reduced a bit. However, this amount of power is very small. High-quality batteries will still retain 80% of the original capacity after being charged for many cycles. Many lithium-powered products will still be used as usual after two or three years. Of course, the lithium battery still needs to be replaced after the end of its life span. The so-called 500 times means that the manufacturer has completed about 625 rechargeable times at a stable depth of discharge, reaching 500 charging cycles. Due to various influences in real life, especially the depth of discharge during charging is not stable, 500 charging cycles can only be used as a reference for battery life. 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: Detailed explanation of the development status and trend of lithium battery equipment