Parameter
Input voltage: 4.5V-5V
Maximum charging current: 1000mA
Charging cut-off voltage: 4.2V ± 1%
Battery over discharge protection voltage: 2.5V/3A
Board size: 2.8cm * 1.7cm

Usage
The type-c base and its adjacent+- pad are the power input terminals, connected to a 5V input voltage. B+is connected to the positive plate of the lithium battery, and B - is connected to the negative electrode of the lithium battery. OUT+, OUT - Connect to the load, such as the Shengzhuang board. Connect the battery to B+, B -, and insert the phone charger until the USB blue light is on and the red light flashes quickly, indicating that there is power connected. After connecting the battery, only the red light is on, and the red light remains on, indicating that charging is in progress. After being fully charged, the blue light and blue light will turn on.
You can connect the load at OUT+and OUT - terminals, and after connecting the load, the red light will remain on. When there is power supply at the input end, the current is obtained from the output end of the power supply. If there is no power supply connected, the current is obtained from the battery. When the battery voltage is below 2.5V, the output is automatically turned off.

Matters Needing Attention
When the battery is first connected, there may be no voltage output at the OUT end, and it is necessary to connect 5V to the power input to charge and activate the protection circuit. When using a mobile phone charger for power supply, it must be able to output 1A or more, otherwise it may not charge properly.