GND is negative electrode

3-Cell (3S) 12.6V Version:

Input voltage: DC 3-6V (recommended DC 3.7V-5V)

Input current: 1A (version 1A); 2A (version 2A): 4A (version 4A)

Charging voltage: 12.6V Charging current: 0.37A (1A version); 0.74A (version 2A); 1 48A (4A version)

Switching frequency up to 1MHz

Quasi CV mode compensates for battery internal resistance voltage loss and wiring resistance,

Battery automatic recharge protection voltage below input and battery short circuit

Good adaptability to input power supply, limited driving capacity, battery overvoltage protection

LED indicator light: “CR” LED is the charging status indicator light

“OK” LED fully charged or constant voltage mode