Specifications:
Input: Micro USB female or + and - solder terminals
Input voltage: 4.5-6V (recommended voltage 5V)
Charge cut-off voltage: 4.2V + / - 1% (charges a 1S Lithium Ion Polymer Battery)
Maximum charging current output: 1000mA (can be adjusted by changing the value of Rprog resistor - resistor values for various current levels are specified in the documentation and usage instructions included with the module)
Battery overcharge protection voltage: 4.3V
Battery discharge protection voltage: 2.4V
Battery over-current protection level: 3A
Board size: 27mm x 17mm x 3.6mm LxWxH (29mm x 17mm including USB connector overhang)
Indicator LEDs: Red: Charging in progress, Blue: Power on, charge complete
Working temperature: -10C - +85C