The Sunkko S-73B Spot Welding Pen delivers fast, instant-trigger performance for accurate battery pack welding. Built with high-conductivity copper wiring, adjustable welding needle spacing, and a lightweight ergonomic design, it ensures reliable, consistent welds for both professional and DIY battery assembly projects.
Welded by push pressure slightly
Fast heat dissipation support high current to weld
Low resistance , good conductivity
Two colour light for welding safety indicator
There are 16 or 25 copper wires
Low resistance
Good conductivity
Fast heat dissipation
Welding nickle strip and grass| Model name | S-73B |
| Resistance | 0.747m ohm |
| others | 1.455m ohm |
| Copper wires | 16 or 25 |
| Timing | 8 hours |
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