How to extend the life of a lithium polymer battery?

Introduction How to extend the life of a lithium polymer battery? Correct Statement: The lifespan of a lithium battery is related to the number of charging cycles completed and has no direct relationship with the number of charging cycles. Simple understanding, for ex

How to extend the life of a lithium polymer battery?

Correct statement: The lifespan of a lithium battery is related to the number of charging cycles completed, but is not directly related to the number of charging cycles.

To understand simply, for example, a lithium battery only uses half its power on the first day and then charges it fully. If it is still the same the next day, i.e. if you charge it half and charge it twice in total, this can only be counted as one charging cycle and not two. Therefore, multiple charges may often be required to complete a cycle. Each time a charge cycle is completed, the battery capacity decreases a little. However, the reduction is very small. High quality batteries still retain 80% of their original power after being charged for many cycles. This is why many lithium-powered products are still used as usual after two orthree years. Of course, lithium batteries will eventually need to be replaced once their lifespan has expired.

The lifespan of lithium batteries is generally 300 to 500 charge cycles. Assuming that the power supplied by a complete discharge is Q, if the reduction in power after each charge cycle is not taken into account, the lithium battery can supply or supplement a total of 300Q to 500Q of power over the course of its lifespan. From this we know that if you charge 1/2 each time, you can charge it 600-1000 times; if you charge it 1/3 each time, you can charge it 900-1500 times. By analogy, if it is charged randomly, the number of times is uncertain. In short, no matter how you charge it, the total amount of electricity added is 300Q to 500Q, which is constant. Therefore, we can also understand this: the lifespan of a lithium battery is relatedto the total charge capacity of the battery, and has nothing to do with the number of charge times. There is little difference in the impact of deep discharge, deep charge and shallow discharge on the life of lithium batteries.

In fact, surface discharge and surface charge are more beneficial for lithium batteries. Only when the product power module is calibrated for lithium batteries is it necessary to deeply discharge and charge. Therefore, products powered by lithium batteries do not necessarily have to stick to the process. Everything is done with convenience in mind. You can charge them at any time without worrying about affecting their lifespan.

If lithium batteries are used in an environment above the specified operating temperature, i.e. above 35°C, the battery power continuesra to decrease, that is, the battery power duration will not be as long. as per usual. If the device is charged at such temperatures, the damage to the battery will be greater. Even storing batteries in a hot environment will inevitably cause corresponding damage to the quality of the battery. Therefore, trying to maintain a proper operating temperature is a good way to extend the life of lithium batteries.

If you use lithium batteries in low temperature environments, i.e. below 4°C, you will also find that the battery life is reduced. The original lithium batteries of some cell phones cannot even be charged. low temperature environments. But don't worry too much, this is only a temporary situation, different from use in high-temperature environments.temperature. Once the temperature rises and the battery molecules are heated, the battery immediately returns to its previous capacity.

If you want to maximize the performance of a lithium-ion battery, you need to use it frequently to keep the lithium battery's electrons in a circulating state. If you do not use lithium batteries frequently, remember to cycle the lithium battery every month and perform power calibration, that is, deep discharge and a deep load.

Reference materials:

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