3. The module accepts an input voltage of DC 3.6-6V and boosts it to a high-voltage output of DC 20000V. Connections are straightforward: red for positive and green for negative input; output cables maintain the same color coordination. 2. Flexible power options include a single 3.7V lithium battery or two 18650 batteries in series. For optimal performance, use batteries with a capacity over 2000mAh, removing any existing protection board from idle mobile phone batteries. 4. Perfect for educational purposes in high schools or for DIY electronic projects. This 20kv boost step-up module can also as a negative-ion generator or a high-voltage source for various scientific and experimental applications. 1. Utilizing coil principles, this high-voltage module outputs a discharge with high efficiency and compact size. Simple to integrate, it requires only a switch and a battery connection. Ideal for applications needing a robust high-voltage pulse. 5. To safety and equipment , avoid using the high-voltage module without a load. Set a proper distance for the high-voltage output line relative to the battery capacity, which affects the arc's reach and intensity in high-pressure applications., Manufacturer: Akfldms