Detailed explanation of lithium battery charging voltage

The battery voltage of the general mobile phone is written as 3.7V, but the voltage of the general charger is written as 5V, but it will not affect the use, because there is no 3.7V mobile phone charger for sale. Do not overcharge the new battery. About the newly purchased lithium battery Many claims are: the charging time must be more than 12 hours, repeated three times in order to activate the battery. This statement that the first three charges should be charged for more than 12 hours is clearly a continuation of the statement that nickel batteries (such as nickel-cadmium and nickel-metal hydride). So this statement can be said to be misinformation at the beginning. The charging and discharging characteristics of lithium batteries and nickel batteries are very different, and we can tell you very clearly that all serious official technical documents emphasize that overcharging and overdischarging will cause huge damage to lithium batteries, especially liquid lithium batteries. . Therefore, it is best to charge according to the standard time and standard method, especially not to charge more than 12 hours. So does the battery need to be activated? The answer is yes, to activate! However, this process is completed by the processing manufacturer, has nothing to do with the user, and the user has no ability to complete it. The real activation process of a lithium battery is as follows: the lithium battery shell is filled with electrolyte-sealed-formed, which is constant voltage charging, then discharge, and so on for several cycles, so that the electrode is fully infiltrated in the electrolyte and fully activated until the capacity reaches the required capacity. So far, this is the activation process-capacity division, which means that the lithium battery has already been activated by the user after leaving the factory. In addition, the activation process of some of the batteries requires the battery to be in an open state, and then seal it after activation. Unless you have battery processing equipment, how to complete it? But why is it written in the manuals of some products that users are advised to fully charge and discharge their mobile phones for the first three uses? Isn't this activation? In fact, the fact is that it will take a period of time, one month or several months, after the battery leaves the factory, is sold, and then reaches the user's hands. As a result, the electrode material of the battery will be passivated, and the capacity will be lower than normal at this time. Value, the use time is also shortened. But the lithium battery is easy to activate, as long as 3-5 normal charge and discharge cycles can activate the battery and restore normal capacity. Due to the characteristics of the lithium battery itself, it is determined that it has almost no memory effect. Therefore, users do not need special methods and equipment during the activation process of the new lithium battery. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: What kind of battery is 18650 lithium battery?