Connection Diagram of Charging Mode Discharge mode connection diagram WARNING Please make sure that "IN+ IN- OUT+ OUT-" and the positive and negative poles of the battery cannot be reversed. Reverse connection will damage the product, battery and charger;The charging mode and discharging mode need to use the button setting to switch the mode before use. See the description below for the switching method.It is a charging/discharging controller but not a charger or voltage converter. Circuit Schematic Quick start: 1. Discharge mode (battery low voltage protection mode) For example: the working voltage of the battery is 18V, and the low-power protection voltage of the battery is 15V. It is expected to cut off the discharge when the battery voltage is less than or equal to 15V. The settings are as follows: a. Connect the circuit according to "Figure 4.1 Discharge mode connection diagram". b. "SWITCH 2" switch to "M" position, press "UP" or "DOWN" when the LED displays "01" Short press "SET", then the module is set to discharge mode 1. c. "SWITCH 2" switches to "V", press "UP" or "DOWN", when the LED displays "CL", short press "SET", then press "UP" or "DOWN" to adjust the LED display value, set The value of "CL" is 15V, then press "SET" to save the value and exit the setting, and the setting will take effect. d. "SWITCH 2" switches to "V" position, press "UP" or "DOWN" when the LED displays "CH", short press "SET", then press "UP" or "DOWN" to adjust the LED display value, set The value of "CH" is 15.5V, then press "SET" to save the value and exit the setting, the setting will take effect. e. Switch "SWITCH 1" as needed. If it is manual mode, you need to press S1 to start the module manually, and it is not necessary for automatic mode. 2.Charging mode For example: the working voltage of the battery is 18V, and the full saturation voltage is 20V. When the battery voltage is less than 18V, start charging, and when the battery voltage is greater than 20V, stop charging. a. Connect the circuit according to "Figure 4.2 Connection Diagram of Charging Mode". b. "SWITCH 2" switch to "M" position, press "UP" or "DOWN" when the LED displays "3", short press "SET", then the module is set to charging mode 3. c. "SWITCH 2" switches to "V", press "UP" or "DOWN", when the LED displays "CL", short press "SET", then press "UP" or "DOWN" to adjust the LED display value, set The value of "CL" is 18V, then press "SET" to save the value and exit the setting, and the setting will take effect. d. "SWITCH 2" switches to "V" position, press "UP" or "DOWN" when the LED displays "CH", short press "SET", then press "UP" or "DOWN" to adjust the LED display value, set The value of "CH" is 20V, then press "SET" to save the value and exit the setting, and the setting will take effect. e. Switch "SWITCH 1" as needed. If it is manual mode, you need to press S1 to start the module manually, and it is not necessary for automatic mode. 2-in-1 Charge/Discharge And Protection Module Functional Overview LED 60s auto offCharge/Discharge time control Manual mode/automatic mode switchable Force start timeProgrammable delay turn on/off40A RelaySuitable for 5~60V"0" standby power consumption (manual mode) Specifications Working Voltage: DC 5V-60V Max Current: 40A Maximum power: 1200 watts Standby Current: 0 in manual mode, 5mA in automatic mode at 18V Voltage accuracy: 0.1V Work Temperature:-25℃~80℃ Work Humidity:5%~90%RH Shell size: 103.6mm*51.8mm*38.8mm DC 5V-60V 40A Low Voltage Cutoff with LCD Display Low Voltage Protector Low Voltage Cutoff Add to Cart Buying Options Customer Reviews 4.0 out of 5 stars 93 — Price $16.99$16.99 — no data Working Voltage DC 5V-60V DC 20V-30V Load Current 40A 20~30A Function Charging protected mode and Discharge protected mode Over Discharge Protection Two low-power modes Automatic and manual Manual mode Standby current 0 or 5mA（18V） 12V Supports on and off delay 99 seconds 60 seconds