What are the requirements for fast charge lithium batteries

　　Do you know how to charge and discharge fast-charge lithium batteries to last longer? Let’s follow my steps to learn more about it:

　　Do you know how to charge and discharge fast-charge lithium batteries to last longer? Let’s follow in my steps to learn more about it:

　　The first is charging: According to the structural characteristics of fast-charge lithium batteries, the highest end-of-charge voltage should be 4.2V, and it cannot be overcharged. Otherwise, too much lithium ions from the positive electrode will be taken away and the battery will be scrapped. The charging and discharging requirements are relatively high, and a dedicated constant current and constant voltage charger can be used for charging. Normally, the constant current charge to 4.2V/cell will switch to constant voltage charge. When the constant voltage charge current drops to less than 100mA, the charge should be stopped. Charging current (mA) = 0.1 to 1.5 times the battery capacity (such as a 2000mAh battery, the charging current can be controlled between 200 and 4000mA). The normal charging current can be selected at about 0.5 times the battery capacity, and the charging time is about 2 to 3 hours.

　　The second is discharge: due to the internal structure of fast-charge lithium batteries, all lithium ions cannot move to the positive electrode during discharge, and some lithium ions must be retained in the negative electrode to ensure that lithium ions can be inserted into the channel smoothly during the next charge. Otherwise, the battery life will be shortened accordingly. In order to ensure that some lithium ions remain in the graphite layer after discharge, it is necessary to strictly limit the minimum discharge termination voltage, which means that fast-charge lithium batteries cannot be over-discharged. The final discharge voltage is usually 3.0V/cell, and the minimum should not be lower than 2.5V/cell. The length of battery discharge time is related to battery capacity and discharge current. Battery discharge time (hours) = battery capacity/discharge current. The discharge current (mA) of fast-charge lithium batteries should not exceed 3 times the battery capacity. (Such as 1000mAH battery, the discharge current should be strictly controlled within 3A) Otherwise it will damage the battery