1.LED Indicator Function: Intuitive LED lights show the charging status and current power level, allowing you to keep track of the battery at all times. 2. Intelligent key control: double-click the key to or end the discharge mode, single-click to check the remaining power, easy and convenient operation. 3. Input protection mechanism: over-voltage and under-voltage double protection, to avoid damage to the lithium battery due to abnormal input voltage, to that the charging process is safe and reliable. 4. Output protection design: integrated over-current and short-circuit protection, effectively preventing damage to the equipment caused by excessive current or circuit anomalies, to the stability of use. 5. Comprehensive battery protection: provide over-current, over-charge, over-discharge and temperature protection to extend the service life and adapt to the needs of various complex environments. Parameter: Voltage: 2-6S lithium battery (4.2V/cell) or lithium iron phosphate (3.6V/cell) Interface: Type C interface Power: 45W Integrated Try. protocol, PD3.1 output Integrated QC2.0/QC3.0/QC3.0+ output fast charging Button function double-click to control the opening and ending when discharging, single-click to display the power level Wide range of applications: can be used for lithium battery charging and discharging, lithium iron battery charging, drone batteries, power tool batteries, rechargeable treasure and so on. Color: As Shown Material: PCB Package Contents: 1 x Lithium battery charging and discharging module Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.