Mini Battery Spot Welder with OLED Display, 80-Level Adjustable Power, Built-in Rechargeable Battery & Type-C Fast Charge, Portable Handheld Welder for 0.1–0.2 mm Nickel Sheet / 18650 Battery Packs

["Compact, one-hand design – The integrated handheld welder combines control board, battery and welding pen in a slim body for easy carry and tight workspaces—no external power brick required.","Precise 80-level output – Dual-pulse welding with 80 selectable power levels lets you tune energy, pulse and delay for clean, consistent spots on 0.1–0.2 mm nickel strips used on 18650/21700 packs.","Clear OLED interface – The OLED screen shows power, pulse, delay, and status at a glance; quick-touch keys make setup fast, and last-used settings are remembered to speed repeat jobs.","Smart protection – Built-in temperature monitoring and over-current/over-voltage/over-heat safeguards help protect the welder and cells; auto sleep saves power; replaceable copper tips ensure stable output.","Ready to work – Type-C fast charging and the included accessories (welding pens, USB-C cable, nickel strips, cleaning/file tool, and small spares) cover daily assembly and repair of packs and small electronics."]