Spesifications : - Input voltage: DC 4.5-9V(Recommended not to exceed 7V) - Output voltage: DC 4.2V/3.6V(default 4.2V) - Output current: 1A(Default max) - LED Indicator: Charging-Red/Green Flashing,Charged-Green - Features:Charging for Lithium battery(4.2V) and Lithium iron phosphate battery(3.6V) - Switch mode: 1>. F Welding point ON for Lithium battery and output 4.2V 2>. F Welding point OFF for Lithium iron phosphate battery and output 3.6V - Adjust output current(need to modify two resistance value on mark "SANYA"): 1>. Default weld 1pcs R100(0.1ohm) resistor and output 1A(max) 2>. Welding 1pcs 0.2ohm resistor next to R100 and output 1.5A(max) 3>. Welding 1pcs 0.1ohm resistor next to R100 and output 2A(max) 4>. Removed R100 and welding 1pcs 0.2ohm resistor on its place and output 0.5A 5>. It requires additional heat sink if output current more than 1A