Multiple welding modes and protections including overcurrent, overheating, and shortcircuit protection help safeguard users and materials while supporting vocational training and student skill development in welding. performance in a portable Spots welder design enables efficient and flexible welding operations for mobile applications, suitable for use in diverse environments. Versatile for home projects such as lithium battery assembly or replacement, and electronic device repairs including smartphones and laptops, improving efficiency and weld quality. Intuitive LCD display provides realtime updates on operating parameters and battery status, allowing users to manage operational information quickly and accurately. Clear and practical use scenarios: Education and training: In classroom or workshop settings, students learn multiple welding modes and safety protections while developing welding skills with realtime feedback. Onsite electronics : Use for assembling or replacing lithium battery packs and repairing devices such as smartphones and laptops, enabling precise, reliable welds in home or field environments. DIY and small projects: Perform spot welds in tight spaces for hobbyist metalwork, prototypes, or rapid assembly tasks where portability and fast setup are advantageous.