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How long does it take to charge a 48v lithium battery?

by:Vglory      2021-05-02
First of all, pay attention to a new lithium battery when charging for the first time: the battery can be unplugged and used when the battery is overflowing. Generally, it will be full after 2-4 hours. Do not charge for more than 8 hours to 12 hours, which is harmful and unhelpful; When prompted, you should start charging as soon as possible; secondly, we do not need to activate the lithium battery. The lithium battery is activated before leaving the factory, so the statement that the activation charge for 12 hours is incorrect is incorrect. The first charge for 12 hours is nickel-cadmium and early nickel-metal hydride, but lithium batteries have no memory effect. Don't do this. Excessive charging time will affect the cycle life of the battery. 48v lithium battery So how to charge the 48v lithium battery correctly? Power lithium battery charging is divided into two stages: 1. Constant current charging, that is, the current is constant, and the voltage of the lithium battery gradually increases with the charging process. According to the above specifications, it is generally charged with a current of 0.2C (C is the nominal capacity of the battery and A way of expressing current comparison, 0.2C is 200mA). When the battery voltage is close to 4.2V, the constant current charging is changed to constant voltage charging. This process takes about five hours. 2. Constant voltage charging, that is, the voltage is constant, and the current gradually decreases as the saturation of the cell deepens. According to the specification, when the current decreases to 0.01C or 10mA, the charging is considered to be terminated. After this process and the constant current charging time are added together, the total charging time should not exceed eight hours. Therefore, there are two criteria for judging whether lithium battery charging has reached overflow saturation: one is that the current is 0.01C, and the other is that the total time does not exceed eight hours. In other words, the lithium battery charging process still cannot reach 0.01C after eight hours , It is regarded as unqualified product. At this point, we have a theoretical understanding of how to charge lithium batteries. When charging lithium batteries, we only need to charge them according to the instructions in the formal charger manual, because the formal lithium battery chargers are based on lithium batteries. The characteristics of the charging mode is designed, that is, the process of constant current and constant voltage charging, we only need to judge whether the battery has overflowed according to the indicator light of the charger. 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 article: What is a lithium battery ternary cathode material
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