The module has overcurrent, overvoltage, and short circuit protection functions, supporting charging and discharging at the same time. In addition, it also has a Type-C interface, which can be directly connected to USB for lithium battery charging. It can be applied to portable devices such as mobile power supplies, power banks, mobile phones, and tablets.

Characteristic parameters:
Charging voltage: 5V
Charging current: 0-2.1A
Fully charged voltage: 4.2 ± 1%
Discharge efficiency: 96%
Static current: 50uA
Output voltage: 5V
Output current: Max2A
Module protection function:
1. Overcurrent protection;
2. Overvoltage protection;
3. Short circuit protection;
4. Over temperature protection;

Pin Definition
VIN+: Input positive pole (charging input)
GND: Input negative terminal
BAT+: battery positive pole
GND: Battery negative pole
OUT+: Output positive pole
GND: output negative pole
Functional features:
1. Short pressing the button will turn on the power display light and boost output. Within 1 second, pressing the button twice in a row will turn off the boost output and power display.
2. Allow filling and discharging at the same time; (At this time, the output voltage is 4.7V
When the module is first loaded, it will automatically turn on the output, and the load current must be greater than 50mA to maintain the output. Otherwise, the output will be turned off after 30 seconds.