How long will the lithium polymer battery be scrapped

　　Of course, lithium batteries eventually need to be replaced. The service life of lithium battery is generally 300~500 charging cycles. Assuming that the power provided by full discharge is Q, if the power reduction after each charging cycle is not considered, the lithium battery can provide or supplement 300q-500q of power in total within its service life. It can be seen that if the battery is charged for 12 times, it can be charged for 600-1000 times; If the battery is charged for 13 times each time, it can be charged for 900~1500 times. By analogy, if the charging is random, the number of times is uncertain. In short, regardless of charging, the total power is 300q~500q, which is constant. Therefore, we can also understand that the service life of lithium battery is related to the total charge capacity of the battery, but not to the number of charges. Deep discharge and deep charge, shallow discharge and shallow charge have little effect on the life of lithium battery. In fact, shallow discharge and shallow charge are more favorable for lithium batteries. Deep discharge and deep charge are required only when lithium battery calibration is performed on the power module of the product. Therefore, products powered by lithium batteries need not adhere to this process. Convenience first. They can be charged at any time without worrying about affecting their service life. If the lithium battery is used in an environment higher than the specified operating temperature, that is, higher than 35 ° C, the battery power will continue to decrease, that is, the battery power supply time will not be as long as usual. If the device is charged at this temperature, the damage to the battery will be greater. Even if the battery is stored in a high temperature environment, it will inevitably cause corresponding damage to the quality of the battery. Therefore, it is a good way to prolong the service life of lithium battery to keep the lithium battery at the appropriate operating temperature as far as possible. If the lithium battery is used in a low temperature environment, that is, below 4 ° C, the service life of the battery will also be shortened. The original lithium battery of some mobile phones can not even be charged under low temperature. But don't worry too much. This is only a temporary situation. It is different from using in high temperature environment. Once the temperature rises, the molecules in the battery are heated, and it will immediately return to the previous power level. If you want to maximize the efficiency of the lithium ion battery, you need to use it frequently to keep the electrons in the lithium battery always flowing. If you do not use the lithium battery frequently, remember to complete the lithium battery charging cycle once a month and calibrate the power supply once, that is, deep discharge and deep charge.

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