250-Gear Dual-Pulse Spot Welder for 18650 Packs

Precise Dual-Pulse Spot Welder for 18650 Battery Packs

- This 250-gear energy-storage spot welding machine is designed for consistent, repeatable welds on 18650 battery packs and nickel strips up to 0.3 mm. With universal 110-240 V input and support for 12 V external power, it delivers stable performance in the workshop or on-site.

The welder uses a super-capacitor energy storage system and dual‑pulse output to concentrate power exactly where it is needed, reducing spatter and improving weld uniformity. A 1.8-inch LCD screen clearly displays working status and settings, while the 250-step power adjustment lets you fine‑tune output for different nickel strip thicknesses and battery configurations. The unit is optimized for 0.1-0.25 mm nickel strip and can firmly weld up to 0.3 mm nickel tape on battery packs. It can also weld thin copper sheet (around 0.1 mm) at the pack outlet to increase current-carrying capacity.

The housing is made from aviation aluminum alloy for durability and efficient heat dissipation. Intelligent temperature control keeps the internal temperature below approximately 45 °C to protect internal components during intensive use. A 50 cm spot welding pen lead provides comfortable reach when arranging cells. The compact body (about 150 × 187 × 100 mm, L×W×H) and low weight make it easy to place on a bench or carry to field jobs. In addition to the universal AC input, the unit can be powered by an external 12 V DC supply (>3 A, 5.5 × 2.1 mm plug), convenient for mobile or off‑grid work where mains power is limited.

Why It's a Smart Choice

• Wide adjustment range with 250 power levels for accurate control over weld strength on different nickel strip thicknesses.
• Energy-storage, dual‑pulse design supports stable, consistent welds on 18650 battery packs with reduced impact on the power grid.
• Universal 110-240 V input plus 12 V DC support, compact aluminum construction, and intelligent temperature control for reliable, flexible use in various environments.

FAQ

Q: What materials and thicknesses can this welder handle?
A: It is designed for 18650 and similar cells with nickel strip typically from about 0.1 mm to 0.25 mm, and can firmly weld up to 0.3 mm nickel tape. It can also weld thin copper sheet (around 0.1 mm) at the pack outlet to increase current capacity.

Q: What power sources can I use?
A: The machine accepts 110-240 V AC (universal input) and can also run from a 12 V DC supply providing more than 3 A via a 5.5 × 2.1 mm plug, which is useful for field or mobile work.

Q: Does it include everything needed to start welding?
A: The package includes one spot welding machine kit with the main unit and welding pen, so you only need a suitable power source and your battery cells, nickel or copper strips to begin.

Q: How is overheating prevented?
A: An intelligent temperature control system monitors internal temperature and manages operation so the internal temperature remains around or below 45 °C, helping protect components during repeated welds.