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At present, the general cycle life of 3.7V 18650 lithium battery can reach 500~1000 times

How long would an 1865 lithium-ion battery last?

At present, the general cycle life of 3.7V 18650 lithium battery can reach 500~1000 times, and the general life of 3.2V 18650 battery can reach more than 2000 times. Of course, the premise is that the qualified batteries of regular manufacturers will have a short life if they are defective or counterfeit batteries. The service life of 18650 lithium battery is only two to three years.

The lithium-ion battery can be charged and discharged 300-500 times. It is best to emit only part of the lithium-ion battery, not all, and often to avoid doing so altogether. Once the battery is offline, the clock starts to move. Whether you use it or not, the lithium-ion battery only lasts two to three years.

The life of 18650 lithium battery is generally 300 to 500 charging cycles. Assuming that the power provided by a complete discharge is Q, if the power drop after each charging cycle is not considered, the lithium battery can provide or supplement 300Q-500Q power during its life. From this we know that if you charge with 1 every time, you can charge 600-1000 times; If you use one every time, you can charge it for 900 ~ 1500 times. By analogy, if the charge is random, the quantity is uncertain.

People often hear the Chinese say that the life of a lithium-ion battery is“500 times”. The working principle of a lithium-ion battery in the sense of“Multiple” is the cycle life, that is to say, such a company's charge and discharge time cycle is completely different, the industry test and analysis method is: discharge depth x charge times = cycle economic life, at the digital discharge depth of 80% , at least 625 charge and discharge, that is, 80% x 625 = 500(multiples) .

In short, no matter how to charge, the total power supply into the 300Q ~ 500Q power supply is constant. So here's another way of thinking: the life of a lithium-ion battery depends on the total charge, not the number of times the battery is charged. The effects of deep charging and shallow charging on lithium life are similar.

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