The lifespan of the lithium battery is 500 charge cycles. For example: a lithium battery only uses half its charge the first day, then fully recharges. If it's still the same the next day, that is, charge it after half use and charge it twice in total. This can only be counted as one charge cycle.
The battery capacity will be reduced a little. However, this power reduction is very small. If the battery is of good quality, it can still retain 80% of its original capacity after several cycles. Many lithium battery products can still be used normally after two or three years.
But then again, products ultimately have a lifespan and lithium batteries also need to be replaced. The so-called 500 times means that the manufacturer has achieved approximately 625 recharges at a constant depth of discharge (80%), reaching 500 cycharging keys.
Another calculation will make things clearer: 625×80%=500 (ignoring factors such as lithium battery capacity reduction). In practice, due to various life influences, including the depth of discharge during charging is not constant, so "500 charging cycles" can only be considered for reference.
For mobile phones and other small electronic devices, you should immediately unplug the power cord (including the USB interface for charging function) after charging and continue to connect it, whether it is a laptop or a cell phone. be careful not to fully charge the battery. Also make sure to let the battery drain (automatic shutdown). If you go out, you can fully recharge the battery, but charge your devices at any time if conditions permit.
InfDetailed information:
Precautions for proper charging of lithium batteries:
< p>1. Avoid charging at too high temperaturesIf the lithium battery is used in an environment above the specified operating temperature, i.e. above 35°C, the power of the battery battery will continue to decrease, that is, battery power will not last as long as usual. Also charge the device if you are at these 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.
2. Avoid charging at too low temperatures
If you use lithium batteries daIn low temperature environments, i.e. below 4°C, you will also find that battery life is reduced. . Some mobile phones The original lithium battery cannot be charged even in a low temperature environment. But don't worry too much, this is just a temporary situation, different from using in high temperature environments. Once the temperature rises and the battery molecules are heated, the battery immediately returns to its previous capacity.
3. Use often
Life is in movement. 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 fluid state. If you do not use lithium batteries frequently, remember to charge the lithium battery every month and perform a test.power alignment, i.e. deep discharge and deep charge.
Baidu Encyclopedia-Lithium Battery