Multiple safety guarantees: voltage stabilization, low temperature protection, overheating protection, and built-in temperature control for worry-free use. Dual-pulse welding output: stable weld points and strong performance; handles 0.1-0.25 mm nickel sheet with precise control. 1.33-inch color screen: high-definition display shows working status clearly at a glance; operation is intuitive. Dual-mode switching: automatic and manual modes for flexible use; suitable for mobile phone batteries and various nickel sheet welding tasks. 11 levels of precise control: enables welding to exact requirements for reliable results and improved durability. Use scenarios: - Welding nickel sheets for smartphone battery tabs and other lithium battery assemblies. - Repairing or assembling smartphone battery packs and power banks. - DIY electronics or hobby projects requiring precise nickel sheet welding.