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The lifespan of lithium batteries is generally 300 to 500 charging cycles. Assuming that the power provided by a full discharge is Q, if the reduction in power after each charging cycle is not taken into account, the lithium battery can provide or supplement it with a total of 300Q-500Q power over its lifespan. From this we know that if you charge 1/2 each time, you can charge 600-1000 times; if you charge 1/3 each time, you can charge 900-1500 times. And so on, if you charge randomly, the number of times is uncertain. In short, no matter how it is recharged, it is constant to replenish 300Q~500Q of electricity. Therefore, we can also understand it in this way: the life of a lithium battery is related to the total charging capacity of the battery, and has nothing to do with the number of charging times. The impact of deep release and shallow release and shallow release and shallow charge on the life of lithium batteries is not much different.
In fact, shallow discharge and shallow charge are more beneficial for lithium batteries. Only when the product's power module is calibrated for lithium batteries can it be necessary to release and charge deeply. Therefore, products powered by lithium batteries do not have to be limited to the process. Everything is convenient first. It is charged at any time and does not have to worry about affecting life.
If lithium batteries are used in an environment above the specified operating temperature, i.e. above 35°C, the battery power will continue to decrease, that is, the battery power will not be as long as usual. If the device is charged at such a temperature, the damage to the battery will be even greater. Even storing batteries in hotter environments will inevitably cause corresponding damage to the quality of the battery. Therefore, trying to maintain a suitable operating temperature is a good way to extend the life of lithium batteries.
If you use lithium batteries in a low temperature environment, that is, below 4°C, you will also find that the battery life time has been reduced. Some mobile phones' original lithium batteries cannot even charge in a low temperature environment. But don't worry too much, this is just a temporary situation. Unlike use in high-temperature environments, once the temperature rises, the molecules in the battery will immediately return to their previous power.
To maximize the performance of a lithium-ion battery, you need to use it frequently to keep the electrons in the lithium battery flowing. If you do not use lithium batteries frequently, please remember to complete a charging cycle for the lithium batteries every month and perform a power calibration, that is, deep release and deep charging once.
The formal name is "charge and discharge cycle", which does not equal "charge times". The cycle refers to the battery from full charge to running out of light. This is a cycle. If your battery uses one-tenth of the battery from full charge, and then it is full again, this is a cycle of ten. This way, charging 10 times will basically be considered a cycle. Similarly, from full charge, half of it is used and then full, and then half of it is used and then full, this is also a cycle, and you have charged twice. Therefore, the cycle only depends on "how much electricity is released from the battery" and has no direct relationship with "number of charges".
Moreover, the nominal charge and discharge cycle number does not mean that it cannot be used after use. However, after so many cycles, the battery's ability to store electricity will drop to a certain level.
For example, a lithium battery has the nominal charge and discharge cycle of "no less than 60% of the nominal capacity after 500 times". This battery can only store up to 60% of the new battery.
There is no fixed charge limit for lithium batteries. Batteries produced by regular manufacturers can generally be charged and discharged at least 500 times, and the capacity remains above 80% of the initial capacity. They can be used for 2 years after charging once a day. Usually, if the mobile phone battery is charged 1,000 times, it will cause the battery to be seriously undustable.
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