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Lithium battery charging methods and common misunderstandings

Lithium battery charging methods and common misunderstandings

July 28, 2023

Latest company news about Lithium battery charging methods and common misunderstandings

1. Regarding the charging method of the new battery, the most popular folklore is "the first three times should be charged for more than 12 hours to activate the battery". In fact, this statement is wrong:


Reason 1: This statement is continued from nickel batteries, but the charging and discharging characteristics of lithium-ion batteries and nickel batteries are very different. For lithium-ion batteries, over-discharging and over-charging will cause serious damage to the battery. Therefore, it is best to charge according to the standard time and method, and remember not to charge for more than 12 hours.


Reason 2: The lithium-ion battery will automatically stop charging after it is fully charged, but if it has been placed on the charger, a discharge-charge cycle may occur, and the characteristics of the battery's charge-discharge protection circuit may change, and the battery is in danger. edge.


2. "Recharge whenever you need it" or "recharge when you need to use automatic shutdown and no power left"? Many people will choose the latter when buying a new machine, but in fact it is not necessary.


Reason 1: The life of a general lithium-ion battery is generally 300~500 charging cycles. Assuming that the power supplied by a complete discharge is 1Q, regardless of the fact that the power will decrease after each charging cycle, the lithium-ion battery can supply a total of 300Q ~500Q of electricity. If you charge 1/2 every time, you can charge 600-1000 times; if you charge 1/3 every time, you can charge 900-1500 times; if you charge randomly, the number of times is uncertain. In short, a total of 300Q-500Q of electricity that can be supplemented is constant. Therefore, the life of a lithium-ion battery is related to the total charging capacity of the battery, but has nothing to do with the number of charges. Deep charging or shallow charging does not have much impact on the life of a lithium-ion battery.


Reason 2: In fact, shallow discharge and shallow charging are more beneficial for lithium batteries. Only when the power module of the product is calibrated for lithium batteries, is it necessary to deep discharge and deep charge. Therefore, in the daily use process, you don't have to stick to using photoelectric recharging, you can recharge it as you use it, and put convenience first.

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