How many times are generally charged and discharged for lithium batteries?

It is often said that the number of cycles of lithium batteries is basically related to the charging cycle. In fact, the two can be said to have the same meaning. You can say: the number of battery cycles is calculated in cycles, or the other way around. Lithium battery charging cycle is calculated based on the number of cycles, both of which are not exaggerated. Lithium battery.jpg What is the charging cycle? A charge cycle refers to a complete charge and discharge process of a lithium battery, that is, when the battery power reaches 100% of the battery capacity, a charge cycle is completed, but it is not necessarily completed by a single charge. This is a misunderstanding of many people. The life of a lithium battery is 500 charging cycles. How can it be counted as a charge and discharge cycle? A charging cycle means the process of using all the power of the lithium battery from full to empty, and then from empty to full. This is not the same as charging once. The so-called 500 times means that the lithium battery manufacturer has achieved about 625 rechargeable times at a constant depth of discharge (80%), reaching 500 charging cycles. Another formula will make it clearer: 625×80%u003d500. (Ignore factors such as the reduction of lithium battery capacity). In practice, due to various influences in life, especially the depth of discharge during charging is not constant, so 500 charging cycles can only be counted as a reference. The charging and discharging times of imported ternary lithium batteries can reach about 3000 times, and the domestic ones are about 800-1000 times. The number of normal charging and discharging of lithium batteries is as high as 2000 times. There are ternary lithium batteries, iron lithium batteries, and polymer lithium batteries. Normally used lead-acid batteries have up to 500 charging and discharging times, such as flat-liquid batteries, flooded batteries, and gel batteries. The current power lithium-ion batteries used in new energy vehicles are mainly three-element lithium batteries, lithium cobalt oxide batteries, and lithium iron phosphate batteries. No matter which type of battery, there is a service life. Power lithium ion The life of the battery is measured according to the number of cycles. The more the number of charging and discharging, the shorter the life of the battery. Regarding the number of cycles of power lithium-ion battery cells, the national mandatory requirement must be more than 1000 times. Lithium iron phosphate can generally be used for 2000 times, and ternary lithium batteries can generally be used for more than 1000 times. Different batteries have different cycle life. Generally, the cycle life of a ternary lithium-ion battery is about 1500 to 2000 times. So the number of recharges alone will not affect the life of the battery. The life of the power lithium-ion battery will only decrease according to the number of cycles. The number of recharges cannot directly determine the service life of the power lithium battery, and multiple recharges in a cycle of charge and discharge can only be regarded as a cycle of battery loss. So when we use electric vehicles, don't worry about the service life of the power lithium battery due to the number of charging times. 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 article: Why does the battery explode?