0.3mm Nickel Spot Welder 120 Gear Adjustable 18650 Battery

Meet the 0.3mm Nickel Spot Welder 120 Gear Adjustable 18650 Battery by DWiusty — a high-performance, budget-friendly option for battery assembly and repair. Built around two strings of low internal resistance supercapacitors (3000 Farad) and four high-current MOSFETs, this machine delivers reliable, repeatable welds on demanding packs while keeping costs down.

Unlike traditional batteries, capacitors store energy and release it quickly, offering instant high-current bursts without memory effects or maintenance headaches. Even after long storage, it remains ready to use. This makes it ideal for building cylindrical monomer packs, mobile phone soft packs, EV battery modules, and repairing power tool packs.

The welding pen features a thickened 16-square copper tip with an alumina copper needle, plus a non-stick needle for smooth soldering of 0.2 pure nickel, 0.3 nickel plating, and 0.4 stainless steel joints. The device is designed for bright, clean joints that don’t blacken over time.

Control and visibility are user-friendly: a single display shows voltage, and you can adjust welding time from 0.5 to 7 seconds and welding power from 1 to 119 levels. The unit supports automatic welding with precise, repeatable results and includes charging controls with constant current and constant voltage charging and capacitor balancing.

Language support is included — hold the power switch for 2 seconds to switch between Chinese and English displays, making it accessible wherever you work.

Benefits & Tips

• Assemble cylindrical monomers and 18650 battery packs for DIY projects with reliable, repeatable welds.
• Use the 0.5–7 second welding window and 1–119 power levels to tailor welds for different nickel thicknesses (0.2–0.3 mm) and materials.
• Perfect for on-the-go repairs or small-batch battery work, delivering strong joints without overheating.

Product specifications

• Brand: DWiusty
• Origin: Mainland China
• Welding method: Capacitor discharge spot welding
• Electrodes: 16-square copper welding pen with alumina copper needle; non-stick needle
• Welding capabilities: 0.3 mm nickel plating, 0.2 mm pure nickel, 0.4 mm stainless steel (joint thickness in mm)
• Power and drive: Four ultra-high current MOSFETs
• Capacitors: Two strings of low internal resistance, 3000 Farad supercapacitors; automatic balancing
• Display: Voltage display on a single screen; 2-second language toggle (Chinese/English)
• Control: Automatic welding with adjustable time 0.5–7 seconds; welding power 1–119 levels
• Charging: Constant current/constant voltage charging with capacitor balancing
• Applications: Suitable for assembling cylindrical monomers, mobile phone soft-pack batteries, electric vehicle batteries, and repairing electric tool batteries

Package includes:

• Details not provided.

Warnings & Reminders

• Capacitors store energy and should be handled with care; ensure proper discharge before maintenance.
• Use the welder for its intended purposes (battery assembly and repair) and follow the user manual for safe operation.
• Observe proper safety precautions when welding and handling energized components.

Providing quality and trusted service since 2002 at intercyprus.com