Discharge method:
The first is to plug in the phone and charge it until the mobile power supply is completely out of power. Now mobile phone batteries do not have to worry about charging loss.
The second is to plug in the charging plug it will automatically output, but usually the output is very low.
The third is the use of 18650 battery cell, if the battery cell is used at a poor level, it will naturally run off.
The fourth is to directly use a resistor to discharge it, and the manufacturer generally uses cement resistance when doing aging tests. Plus or minus 10 ohm resistance.
Fifth, connect a usb fan in the charging bank to keep it in working state.
Six is as long as the two wires connected to the positive and negative electrodes can be discharged.
First, connect USB devices such as USB fans to the USB port of the maximum output current of the charging bank, and you can discharge quickly with the maximum output current.
Plug a power cord into a place where there's no electricity, or a charging device and he'll just keep discharging