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 description:
VIN: Charge port positive input +
GND: Charger Negative Input –
BAT: Lithium Battery +
GND: Lithium Battery –
GND: Output negative output –
OUT: Output Positive Output +
KEY: Output Enable Trigger Port (Low Pulse Trigger)
Note :
In the discharge mode (the charging mode KEY function is invalid), the KEY port is triggered once, and the output is turned on; the KEY port is continuously triggered twice, and the output is turned off.
When the load is first connected, the output will be automatically turned on. If the small fish 50MA is loaded, the output will be turned off after 30 seconds; if the load is greater than 50MA, the output will be continuously turned on.
Allow one side to discharge while charging (Note: this is the output voltage >4.7/<5V)
Wiring Instructions :
When the module is plugged in, the output will switch to external power supply (it will be powered off for 0.3s). When charging, the output voltage will be less than >4.7/<5V, depending on the charger load capacity!
Trigger mode: low level trigger (ground)
Connect to the single-chip microcomputer, if the connection is less than the load KEY, you can connect the single-chip microcomputer for about 20s to give a low level to keep the module working continuously.
Indicator Light :

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








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