Features:
Charging voltage: DC 4.5V-5.5V (DC 5V recommended)
Charging current: 0-2.1A
Charging quiescent current: 100uA
Overcharge protection voltage: 4.2V±1%
Discharge current: 0-3.5A
Discharge quiescent current: 50uA
Discharge efficiency: 96% maximum
Output voltage: 5V
Output current: 0-2.1A
Ambient temperature: -20℃ to + 85℃
The module comes with lithium battery protection function
Over-current protection (OCP)
Overvoltage protection (OVP)
Short Circuit Protection (SCP)
over-temperature protection (OTP)
Charge and discharge power level 4 interval indication

Pin Definition
1. VIN: Charging port is input+(DC4.5V-5.5V(recommended DC 5V);
2.GND: Charging port is input-;
3.GND: Lithium battery-;
4.BAT: Lithium battery+
5.GND: Output negative output-
6.VOUT: Output positive output+;
7.KEY: Output enable trigger port( low pulse trigger).
-In the discharge mode(the charging mode KEY function is invalid), the KEY port is triggered once, turn on the output: continuously trugger the KEY port 2 times to turn off the output.
- The first time the load is connected, the output is automatically turned on. If the load is less than 50MA, The output is turned off after 30 seconds; if the load is greater than 50MA, the output is continuously turned on.
-It is allowed to discharge while charging(note: this is the output voltage>4.7/5V)

Applications:
Car charging retrofit
Driving recorder power supply
Mobile power/ charging treasure
Portable devices such as mobile phones and tablets

Note:
The use of this electronic product requires a certain knowledge base. If you do not understand. Please be careful to buy it. Otherwise, it may be damaged due to improper use or over-range use. Thank you for your understanding and support.

Package included:
10pcs Charge Discharge Integrated Module