DC 3.7V 20KV High-Voltage Boost Module – Arc Generator
DC 3.7V 20KV High-Voltage Boost Module – Arc Generator
DC 3.7V to 20KV High-Voltage Boost Module – Integrated Arc Discharge Generator
This compact high-voltage boost module converts a standard 3.7V 18650 lithium battery input into a powerful 20 kV output, producing a visible electric arc with a discharge distance of approximately 13–18mm. Engineered with a high-power boost chip refined through multiple design iterations, this module is ideal for electronics enthusiasts, DIY projects, science demonstrations, and hobbyist high-voltage experiments.
The module integrates seamlessly with a single 18650 lithium battery and is sized to fit standard plastic tubing for easy enclosure. Output voltage is fully adjustable by varying the resistance, giving you flexible control over performance. Made in Mainland China.
Key Features
- High-Voltage Output: Delivers up to 20 kV at 4.2V input for a striking arc discharge.
- Long Discharge Range: Arc discharge distance of approximately 13–18mm for impressive output.
- Adjustable Output Voltage: Tune the output up or down by adjusting resistance to match your application.
- No-Load Operation Supported: Safe to operate without a load — no risk of damage during standby.
- Low Standby Consumption: Standby current of just ~0.3mA; remove the battery for extended storage.
- Compact & Durable Build: Dimensions: 130mm × 22mm × 25mm — fits standard plastic tube housings.
- Simple Power Source: Runs on a single standard 3.7V 18650 lithium cell (not included).
Technical Specifications
| Supply Voltage | 3.7V (standard 18650 lithium battery) |
| Maximum Output Voltage | ~20 kV (at 4.2V input) |
| Operating Current (Discharge) | ~2A |
| Discharge Distance | ~13–18mm |
| Standby Current | ~0.3mA |
| Recommended Battery Capacity | 2200mAh or higher |
| Module Dimensions | 130mm × 22mm × 25mm |
| Package Type | TQFP integrated module |
| Quantity | 1 × Module (battery not included) |
| Country of Origin | Mainland China |
What's in the Box
- 1 × DC 3.7V 20KV High-Voltage Boost Module
- Note: 18650 lithium battery is NOT included.
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Learn more: EPA guidance on lithium-ion battery handling
Frequently Asked Questions
Q: What battery does the 20KV high-voltage boost module require?
A: This high-voltage boost module is powered by a standard 3.7V 18650 lithium battery (not included). A capacity of 2200mAh or higher is recommended — batteries with lower capacity have higher internal resistance, which can significantly reduce the output voltage of the module.
Q: Can I adjust the output voltage of this boost module?
A: Yes. The output voltage of this DC 3.7V to 20KV boost module is fully adjustable. By varying the resistance in the circuit, you can tune the output voltage up or down to suit your specific project or application needs.
Q: Is this high-voltage arc generator safe to run without a load connected?
A: Yes, this module supports no-load operation — it will not be damaged if operated without a load. For extended periods of non-use, it is recommended to remove the 18650 battery from the module to minimize the ~0.3mA standby current draw and preserve battery life.
Q: What is the arc discharge distance of this module?
A: At full power (4.2V input), this high-voltage boost module produces an electric arc with a discharge distance of approximately 13–18mm, making it suitable for science demonstrations, DIY electronics experiments, and hobbyist high-voltage projects.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.