SPECIFICATIONS

This board has charging function and battery discharge protection function, can be charged and discharged at the same time.


Module Features and Specifications. 
Input with TYPE C USB female socket
You can directly use the cell phone charger as the input to charge the lithium battery.
And still retains the input voltage wiring solder joints, can be very convenient DIY!
Input voltage: 5V
Charging cut-off voltage: 4.2V ±1%
Large charging current: 1000mA
Battery over-discharge protection voltage: 2.5V
Battery over-current protection current: 3A
Board size: 2.6*1.7CM

Usage:
Note: when the second access to the battery, there may be no voltage output between OUT + and OUT -, then access to the 5V voltage charge to activate the protection circuit, the battery from the B + B - short open and then connected to the battery also need to be charged to activate the protection circuit. When using a cell phone charger as input, note that the charger should be able to output 1A or more, otherwise it may not charge properly.
The TYPE C USB female connector and the + - pads next to it are the power inputs, connect them to 5V, B+ to the positive side of the Li-Ion battery, B- to the negative side of the Li-Ion battery, and OUT+ and OUT- to the loads, e.g., the positive and negative side of the mobile booster board, or any other loads.