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Charging current (mA)=0.1~1.5 times the battery capacity (such as a 1350mAh battery, its charging current can be controlled between 135~2025mA). The conventional charging current can be selected at around 0.5 times the battery capacity, and the charging time is about 2-3 hours.

Discharge of lithium-ion batteries: Due to the internal structure of lithium-ion batteries, not all lithium ions can move towards the positive electrode during discharge. It is necessary to keep a portion of lithium ions at the negative electrode to ensure that they can be smoothly embedded in the channel during the next charge. Otherwise, the battery life will be correspondingly shortened. In order to ensure the presence of local lithium ions in the graphite layer after discharge, it is necessary to strictly limit the minimum voltage for stopping discharge, which means that lithium-ion batteries cannot be over discharged. The discharge termination voltage is generally 3.0V/knot, and the minimum cannot be lower than 2.5V/knot.

The duration of battery discharge is related to the capacity and discharge current of lithium-ion batteries. Battery discharge time (hours)=battery capacity/discharge current. The discharge current (mA) of lithium-ion batteries should not exceed three times the battery capacity. If a 1000mAH battery is used, the discharge current should be strictly controlled within 3A, otherwise it may cause damage to the battery.

How to discharge lithium-ion batteries?

The discharge process of lithium-ion batteries during operation is balanced. In theory, lithium-ion battery discharge should pay attention to the discharge rate and depth. The discharge depth is the ratio of the discharge amount to the nominal capacity, and the best reference indicator in application is voltage. The general standard is that a lithium-ion battery can be charged when it is discharged between 2.75V and 3V. However, if it is discharged below 2.75V, it is prone to over discharge, which is a taboo for charging batteries. In terms of internal structure, over discharge can cause excessive evaporation of the electrolyte, and excessive reaction of the negative electrode of the lithium-ion battery can cause changes in its dielectric film, resulting in a decrease in its ability to de intercalate and a permanent loss of capacity.

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