The Sunkko 737DH is built for high-precision battery spot welding with advanced controls and dependable performance. Its durable design and stable output ensure clean, consistent welds, making it ideal for lithium battery pack assembly, repair, and professional manufacturing applications.
Delayed welding function with 3-level power adjustment for precise welding.
Real-time current display to monitor output.
Supports fixed and mobile spot welding methods.
External foot switch for precise control.
Adjustable welding head pressure for reliable welds.
2/4/6/8 pulse selection for strong welding points.
Automatic inductive discharge for fast welding of large battery packs.
Lithium battery pack
Strain gauge
Stainless steel mesh
Circuit board
Portable charger| Double pulses time | 1~10ms |
| Welding thickness | 0.15~0.35mm(fixed head)/0.05~0.25mm(spot welding pen) |
| Welding current | 120~1200A |
| Welding needle spacing | 2~7mm |
| Size of welding pin | ∅1.5mmX7mm |
| Total length of | ≈580mm |
| Welding pen cable area | 16mm2 |
| Weight | Approx. 1.4 kg |
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