Input interface: Type-C USB.
Battery overcharge lifting voltage: 4.00
V Battery: over-current protection current 3 A ^^
Maximum charging current output: 1000 ma
Light state: no load the light not bright, red light for recharging, is full of blue light. ^^ Digital tube 8 grey level is adjustable. ^^ Module connects to digital I/O on 2 pins. ^^ The control interface electrical level is 5V.