Portable Spot Welder Digital Display Lithium Battery

Portable Spot Welding Machine is a compact, self-powered battery pack spot welder designed for assembling and repairing 18650 lithium-ion, nickel metal hydride (NiMH), and nickel cadmium (NiCd) battery packs with precision and ease. Unlike traditional bench-top welders that require a mains supply, this unit houses a built-in 5000mAh lithium battery charged via 5V USB input making it fully portable for field repairs, bench work, and mobile battery pack assembly.

The machine delivers a wide welding current range of 6A to 1200A with 30 adjustable power levels, giving you precise control over weld strength to match different nickel strip thicknesses from 0.1mm up to 0.25mm. Two included 40cm welding pens connect directly to the unit for handheld operation without awkward cabling. An integrated digital display provides real-time monitoring of voltage, current, battery status, preheating duration, weld interval, and pulse parameters eliminating guesswork and enabling repeatable, consistent welds across every cell in your pack.

Additional features include a built-in 2.4A quick charge output for powering or charging devices via the unit’s power bank function, and an ultra-low 20µA standby current for extended battery life between sessions. Ideal for DIY battery pack builders, electronics repair technicians, e-bike battery assemblers, and power bank builders who need a reliable, portable, and adjustable spot welder without the bulk of a transformer-based machine.

Specification:

• Input Voltage : 5V DC (USB)
• Output Voltage : 4.2V DC (max)
• Built-in Battery Capacity : 5000mAh
• Charging Time : ~3 hours
• Standby Current : 20µA
• Welding Current Range : 6A – 1200A
• Power Adjustment : 30 levels (adjustable gears)
• Weldable Nickel Thickness : 0.1mm – 0.25mm
• Welding Pen Length : 40cm (pair included)
• Display : Digital — shows voltage, current, preheating, interval, pulse parameters, battery status
• Quick Charge Output : 2.4A (power bank function)
• Compatible Battery Types : 18650 Li-ion, NiMH, NiCd
• Applications : Battery pack assembly, battery repair, DIY power banks, e-bike packs
• Package Includes : 1 × TA1197 Spot Welder, 2 × 40cm Welding Pens