Charging protection to prevent battery overcharge and overdischarge, and automatically control the charging current to better protect the battery;. Type-c female connector, reserved input voltage welding point, convenient for DIY.
The type-c female base and its adjacent +-plate are the power input terminals, which are connected to 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. Connect OUT+ and OUT- to a load, such as a booster board. Connect the battery to B+, B-, insert the mobile phone charger until the USB blue light is on, indicating that there is power supply, and the red light is flashing, indicating that it is charging. After charging, the red light stops flashing and turns to a steady light. The load can be connected to the OUT+ and OUT- terminals. After the load is connected, the red light is always on. When there is power at the input terminal, the current is obtained from the output terminal of the power supply. If the power is not connected, the current is obtained from the battery. When the battery voltage is lower than 2.5V, the output is automatically turned off.
4. Matters needing attention: When the battery is connected for the first time, there may be no voltage output at the OUT terminal. It is necessary to connect 5V to the power input terminal to charge it to activate the protection circuit. When using a mobile phone charger to supply power, it must be able to output more than 1A, otherwise it may not be able to charge normally.
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