Description

Product Introduction:

This product offers charging protection to prevent overcharging and over-discharging of the battery, while automatically controlling the charging current for better battery protection. It features a Type-C female connector and retains input voltage welding points for convenient DIY.

Product Basic Parameters:

• 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 Instructions:

1. Connect the 5V input voltage to the Type-C female connector and its adjacent +/- power input pads.
2. Connect B+ to the positive terminal of the lithium battery and B- to the negative terminal.
3. Connect OUT+ and OUT- to the load, such as a boost board.
4. After connecting the battery to B+ and B-, insert a mobile phone charger into the USB port. When the blue light turns on and the red light flashes rapidly, it indicates that power is connected. After connecting the battery, only the red light will be on, indicating that charging is in progress. When the battery is fully charged, the blue light will turn on.
5. You can connect a load to the OUT+ and OUT- terminals. When the input has power, current is obtained from the power output. If no power is connected, current is drawn from the battery. When the battery voltage drops below 2.5V, the output is automatically shut off.

Precautions:

1. When connecting the battery for the first time, there may be no voltage output at the OUT terminals. You need to connect a 5V power source to the input to activate the protection circuit.
2. When using a mobile phone charger as the power supply, it must be able to output more than 1A; otherwise, it may not charge properly.