Module features and parameters: The input terminal has a MICRO USB socket, which can be used to charge the lithium battery directly by using the mobile phone charger.

And still have input voltage wiring solder joints, which can be very convenient DIY

Input voltage: 5V

Charge cut-off voltage: 4.2V ±1% Maximum charging current: 1000mA

Battery over discharge protection voltage: 2.5V

Battery overcurrent protection current: 3A

Instructions:

Note: When the battery is connected for the first time, there may be no voltage output between OUT+ and OUT-. At this time, the protection circuit can be activated by plugging in the 5V voltage and charging the battery. The battery is shorted from the B+ B- and then connected. A charge is required to activate the protection circuit. When using the mobile phone charger for input, please note that the charger must be able to output 1A or ̧, otherwise it may not be charged properly.