How to calculate the life of lithium-ion battery?

How to calculate the life of lithium-ion batteries? Mass-produced lithium-ion batteries are measured according to the service life of lithium-ion batteries, while the industry refers to the performance of lithium-ion batteries according to the number of cycles of lithium-ion batteries. However, in practical applications, the user's usage methods are very different, because there is no comparability between tests under different conditions, so the meaning of cycle life must be standardized and compared. Lithium-ion battery wholesale according to national standards, test conditions and cycle life requirements of lithium-ion batteries are as follows: charge 150 minutes constant current and constant voltage charging system (1c) at room temperature 25c, discharge at constant current, discharge until 2.75v system is one Period (1c). When the discharge time is less than 36 minutes, the test ends, and the number of cycles must be greater than 300. In fact, the number of recycling of lithium-ion batteries is not only affected by the different ways users use them, but also related to the production technology level and material formulations of lithium-ion battery manufacturers. Hefei lithium-ion battery wholesale lithium-ion battery pack: This meaning stipulates that the cycle life test shall be carried out in a deep charge and deep release method. It is stipulated that the cycle life must be performed more than 300 times after the end of this mode, and the capacity is still more than 60%. In fact, different cycles The circulatory system is very different. If it exceeds other conditions, only the constant voltage voltage is changed from 4.2V to 4.1V. The constant voltage cycle life test of the battery of the same model, so the battery is not deep-filled, and the final test cycle life time can be Adding nearly 60% If the cut-off voltage is added at 3.9V, the cycle should be able to increase several times. Regardless of the rules, it is meaningless to talk about cycle time, because cycle time is a way of measuring battery life, not the purpose itself! Misunderstanding: Many people like to use lithium-ion batteries to charge their phones. This is completely unnecessary. In fact, it is impossible for the user to use the battery in the gb test mode. 2.75v does not shut down, the discharge method is not high current constant discharge, but a mixture of GSM pulse discharge and small current discharge. Lithium-ion battery wholesale has another measure of cycle life, time. Some experts have proposed that the service life of general civilian lithium-ion batteries is 2 to 3 years. According to actual conditions, such as the end of the service life of a lithium-ion battery with a capacity of 60%, plus the aging effect of lithium-ion batteries, time is used to express the cycle life. More reasonable. 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: What are the advantages and disadvantages of lithium-ion battery electric bicycles