The high-voltage module 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. Input voltage: DC 3V-6V Input current: 2A-5A High voltage type: pulse current type Output voltage: about 200,000 volts (please pay attention to safety when using) High-voltage two-pole discharge distance: 10mm-20mm Output high voltage line length: about 100mm Input power cord length: about 100mm (red line is positive) Dimensions: Φ24*64mm About 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) or nickel cadmium / nickel metal hydride battery, 4V or 6V lead acid Battery, etc.