This circuit board has both charging and battery discharge protection functions, allowing for simultaneous charging and discharging
Input end with TYPE C USB female socket. Input voltage: 5V, Charging cut-off voltage: 4.2V ± 1%
High charging current: 1000mA, Battery over discharge protection voltage: 2.5V
Battery overcurrent protection current: 3A
You can directly use a mobile phone charger as an input to charge lithium batteries, and it still retains the input voltage connection solder joints, making it very convenient for DIY