GX591 12V Spot Welder Control Board – 99-Gear Digital Display
GX591 12V Spot Welder Control Board – 99-Gear Digital Display
GX591 DIY Battery Spot Welder – Digital Tube Display Control Board
Take your battery pack assembly to the next level with the GX591 12V Battery Energy Storage Spot Welding Control Board. Designed for hobbyists, electronics makers, and DIY engineers, this compact circuit board delivers professional-grade spot welds on 18650 lithium cells and nickel strips — right from your workbench.
Key Features
- High-Speed Single-Chip Design: Intelligent processing ensures precise, consistent welds every time. Real-time battery voltage is shown on the display so you always know your power status.
- 6× MOS Tube Technology: Six high-performance MOS tubes enable peak welding currents of up to 2,400A, producing strong, clean welds on nickel strips as thin as 0.1–0.2 mm.
- 99 Adjustable Power Levels: Fine-tune output across 99 gears for precise control over weld strength — perfect for high-volume, continuous welding tasks on nickel plates and battery tabs.
- 3-Digit Digital Display: A clear digital tube display shows the current gear setting and battery voltage in real time. When idle, it alternates between gear and power supply voltage for quick at-a-glance monitoring.
- Flexible Welding Pen: The 12AWG multi-strand, high-temperature wire welding pen resists twisting and delivers responsive handling. The thick pure copper pen body and aluminum-copper needle provide excellent current conductivity and long-term durability.
- Auto-Trigger Support: Supports automatic welding trigger, streamlining repetitive welding operations.
Specifications
| Model | GX591 Welding Machine Control Board |
| Working Voltage | 8–24V |
| Working Current | < 20mA |
| Peak Welding Current | Up to 2,400A |
| Standby Power Consumption | < 0.5mA |
| Welding Thickness | 0.1–0.2mm nickel strip |
| Max Operating Temperature | 175°C |
| Board Size | 89 × 54 mm (3.50 × 2.13 in) |
| Weight | 180 g |
| Material | Printed Circuit Board (PCB) |
Compatible Power Sources
- Lead-Acid Battery: 2× 20Ah electric vehicle battery; 36–40Ah car starting battery
- LiPo Model Battery: 3S 4000mAh 35C / 3S 5000mAh 25C / 3S 8000mAh 20C
- Car Starting Power Supply: 11.5–14.8V, 36–60Ah (internal resistance 2.5–7 mΩ)
- Custom Battery Pack: 11.5–14.8V, total internal resistance < 7 mΩ
What's in the Box
- 1× GX591 Welding Machine Control Board
Made in Mainland China.
Note: Due to monitor and lighting differences, actual product color may vary slightly from images. Please allow ±1–2 cm measuring deviation due to manual measurement.
For general electrical safety guidance when working with high-current tools and circuits, refer to OSHA Electrical Safety.
Frequently Asked Questions
Q: What batteries are compatible with the GX591 spot welder control board?
A: The GX591 works with several power sources including lead-acid batteries (2× 20Ah EV batteries), 3S LiPo model batteries (4000–8000mAh), car starting power supplies (11.5–14.8V, 36–60Ah), or custom-assembled battery packs with 11.5–14.8V and a total internal resistance under 7 milliohms.
Q: What thickness of nickel strip can the GX591 weld?
A: The GX591 is designed to weld nickel strips ranging from 0.1mm to 0.2mm thick, making it well-suited for 18650 lithium battery pack assembly and similar DIY electronics projects.
Q: How do I adjust the welding power on the GX591?
A: The GX591 features 99 adjustable power output gears, selectable directly via the onboard controls. The 3-digit digital tube display shows the current gear and battery voltage in real time, allowing you to dial in the exact power level for your application.
Q: Is this a complete spot welder or just the control board?
A: This listing includes the GX591 welding machine control board only. You will need to supply your own compatible power source. The board is designed for DIY builds and integrates with standard welding pen accessories.