How to charge a new lithium battery?

by:CTECHi     2021-08-10

Everyone is not unfamiliar when it comes to lithium batteries. In fact, we are dealing with lithium batteries all the time. For example, we cannot do without electric vehicles when we go to work, various digital products in life, and mobile phones for communication. These are closely related to our lives, and these products are inseparable from lithium batteries (each high-quality rechargeable lithium battery is inseparable from a lithium battery protection board), and the lithium batteries of these products are It needs to be recharged. Many people will first ask how the battery is when buying it. For example, when buying a mobile phone, do they consider the durability of the battery? Is it okay to wait for power? How can I charge the battery that I just bought? I believe everyone has encountered these problems, so today, the Chinese Chuangfa will learn how to charge new lithium batteries with everyone?

In the use of lithium batteries, it should be noted that after the battery is left for a period of time, it will enter a sleep state. At this time, the capacity is lower than the normal value, and the use time is also shortened. But the lithium battery is easy to activate, as long as the battery can be activated and restored to normal capacity after 3 to 5 normal charge and discharge cycles. Due to the characteristics of the lithium battery itself, it is determined that it has almost no memory effect. Therefore, the new lithium battery in the user's mobile phone does not require special methods and equipment during the activation process. Not only is this true in theory, but from my own practice, it is best to use the standard method of charging from the beginning, which is the 'natural activation' method.

For the 'activation' problem of lithium batteries, many opinions are: the charging time must be more than 12 hours, repeated three times in order to activate the battery. This statement of 'the first three charges should be charged for more than 12 hours' is obviously a continuation of the statement of nickel batteries (such as nickel-cadmium and nickel-metal hydride). So this statement can be said to be misinformation at the beginning. There is a very big difference between the charge and discharge characteristics of lithium batteries and nickel batteries, and I can tell you very clearly that all the serious official technical materials I have reviewed emphasize that overcharge and overdischarge will affect lithium batteries, especially liquid lithium Ion batteries cause great damage. Therefore, it is best to charge according to the standard time and standard method, especially not to charge more than 12 hours. Usually, the charging method described in the mobile phone manual is the standard charging method suitable for the mobile phone. In addition, mobile phones or chargers with lithium batteries will automatically stop charging after the battery is fully charged, and there is no so-called 'trickle' charging that lasts for more than 10 hours in nickel battery chargers. In other words, if your lithium battery is fully charged, it is also white charged on the charger. And none of us can guarantee that the characteristics of the battery's charging and discharging protection circuit will never change and the quality will be foolproof, so your battery will be on the verge of danger for a long time. This is another reason why we oppose long charging.

In addition, on some mobile phones, after charging for more than a certain period of time, if you do not remove the charger, then the system will not only stop charging, but also start a discharge-charge cycle. Perhaps the manufacturer of this approach has its own purpose, but it is clearly detrimental to the life of the battery and mobile phone/charger. At the same time, long charging takes a long time and often needs to be carried out at night. According to the situation of my country's power grid, the voltage at night in many places is relatively high and fluctuates greatly. As mentioned earlier, lithium batteries are very delicate, and their ability to withstand fluctuations in charging and discharging is much worse than that of nickel batteries, so this brings additional dangers. In addition, another aspect that cannot be ignored is that lithium batteries are also not suitable for over-discharge, and over-discharge is also very detrimental to lithium batteries.

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