How many cycles can a lithium battery normally be used?

The charging cycle refers to the capacity of the battery from full to empty, and then from empty to full, which is different from charging. For example, a lithium battery uses half of its power on the first day and then recharges it. If this is still the case the next day, with half the charge, there will be a total of two charge drops. This can only be counted as one charge cycle, not two. Therefore, it may take several recharges to complete a cycle. Every time it is cycled, the capacity of the battery will decrease a bit. However, the scale of the power outage was small this time. High-quality batteries can still maintain 80% of the original capacity after multiple recharges. Many lithium-ion products can still be used after two to three years. Of course, the life of the lithium battery after use still needs to be replaced. The so-called 500 times refers to the number of charging cycles of about 625 times after the manufacturer's stable discharge depth (such as 80%) ends, reaching 500 charging cycles. (80%*625u003d500) (ignoring the reduction of lithium battery capacity and other factors) However, due to various influences in real life, especially the unstable depth of discharge during charging, 500 charging cycles can only be used as a reference battery life. Correctly stated: The service life of a lithium battery is not directly related to the end of the charge cycle and the number of charge cycles. Simply put, for example, a lithium battery uses half of its power on the first day and then recharges it. If this is still the case the next day, with half the charge, there will be a total of two charge drops. This can only be counted as one charge cycle, not two. Therefore, it may take several recharges to complete a cycle. Every time you complete a charging cycle, the charge will decrease a bit. But the reduction is very small. After many cycles, high-quality batteries can still maintain 80% of the original capacity, which is why many lithium-ion products can continue to be used after two or three years. Of course, when the life of the lithium battery rises, it will have to be replaced. The service life of lithium batteries is generally 300 to 500 charging cycles. Assuming that the amount of electricity supplied by a complete discharge is asked, if the amount of electricity is reduced in each charging cycle in the future, a total of 300Q-500Q of electricity can supply or make up for the lifetime of lithium. So we know that if we use 1/2 charge each time, we can charge 600-1000 times; if we use 1/3 of the power each time, we can charge 900~1500 times. For example, if you charge randomly, the number of times is variable. In short, no matter how you charge, there is always 300Q to 500Q of electricity entering this point is stable. Therefore, we can also understand that the life of a lithium battery is related to the total power of the battery, and has nothing to do with the amount of power. There is no difference in the impact of deep discharge and shallow discharge on the life of lithium. In fact, shallow discharge and shallow charge are more beneficial to lithium batteries. Only when the lithium battery is done on time in the power module of the product, can deep discharge and deep charge be necessary. Therefore, do not get stuck in the process of using lithium power products, everything is convenient first, charge at any time, do not worry about the impact on life. If the use temperature of lithium exceeds 35°C, the power of the battery will continue to decrease, which means that the life of the battery will not be as long as usual. If you have to charge your device at this temperature, the damage will be even greater. Even if the battery is stored in a high-temperature environment, the quality of the battery cannot be prevented from being damaged. Therefore, maintaining a proper operating temperature is a good way to extend the service life of lithium batteries. If the lithium battery is used in a low temperature environment, that is, below 4°C, the battery life will also be shortened. Some mobile phone primary lithium batteries may even charge in a low temperature environment. But don't worry too much, this is only a temporary situation, unlike using it at high temperatures, once the temperature rises, the molecules in the battery will be heated to restore the original power. In order to make full use of lithium batteries, they usually have to keep electrons flowing. If you don't use lithium batteries frequently, please remember to charge the lithium batteries once a month at the end of the charge cycle, and do a power calibration, that is, deep charge. 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 lithium battery capacity decay?