Input Voltage: DC 3.7-6V; Output Voltage: DC 50000V High Voltage(Please Pay Attention to Safety); Input Wiring: Red - Positive; Black - Negative; Output Wiring: the Other Side Same Color Cable High Quality: High Voltage Generator 50kv is Made by Using the Tesla Coil Principle, and Outputs High-Voltage Pulse High-Voltage Current, Small Volume, High Efficiency, Simple Peripheral Circuit (Just Need to Connect the Switch, the Battery Can Be) the Discharge Intensity is Fierce Convenient to Use: 50kv Boost Step Up Power Module the Power Supply: You Can Use a Single 3.7V Lithium Battery or Two Series,Such as 18650 Battery, Idle Mobile Phone Battery (to Remove the Protection Board, Recommended Capacity Above 2000mAh),With 100mm Wire Cable ,Convenient to Connect Attention: High-Voltage Module Should Avoid the Use of High-Voltage Current Without a Load. Power Must Be Set to a Suitable Distance to the High Voltage Output Line, the Battery Capacity is Proportional to the Distance and the Use of the High Pressure Arc (NOT a Voltage as high as possible, Must Provide Sufficient Current) Application: 50kv Boost Step Up Module Can Be Used as High-School Scientific Experiments, Electronic Devices, Negative-ion Generator, High-Voltage Source and Small Science 50kv Boost Step Up Module