Features:1. 100% Brand New And High Quality.2. MCU Users, If You Accept A Small Load KEY Can Be Connected To The Microcontroller About 20s To Provide A Low Level Allows The Module To Continue Working. Trigger Mode: Low Level Trigger (Ground).3. 4 In 1: Charging, Discharging, Lithium Battery Protection, Battery Level Indicator Module.4. Lithium Battery Protection Function: Over-Current, Overvoltage, Over-Temperature, Short Circuit Protection.5. In Discharge Mode (The Charging Mode KEY Function Is Invalid), Trigger The KEY Port Once To Open The Output; Continuously Trigger The KEY Port Twice To Close The Output.6. The First Time The Load Is Connected, The Output Is Automatically Turned On.7. If The Load Is Less Than 50MA, The Output Will Be Automatically Turned Off After 30 Seconds; If The Load Is Greater Than 50MA, The Output Will Be Automatically Turned On.8. Allow Discharge While Charging (Note: At This Time Output Voltage 4.7 / 5V).

Specifications:Charging Voltage: DC 4.5V-5.5V (Recommended DC 5V)Charging Current : 0-2.1ACharging Quiescent Current: 100uAFull Voltage: 4.2V+-1%.Discharge Current: 0-3.5A;Discharge Quiescent Current: 50uADischarge Efficiency: 96% MaximumOutput Voltage: 5VOutput Current: 0-2.1A;Ambient Temperature: -20° To +85°

Package Included:1Pc 2A 5V Charge Discharge Integrated Module.

Note:1. Due To The Different Monitor And Light Effect, The Actual Color Of The Item Might Be Slightly Different From The Color Which Is Showed On The Pictures.2. Please Forgive 1 Cm/0.39"-3 Cm/1.18" Measuring Deviation Due To Manual Measurement.