The unit supports spot welding of nickel sheets from 0.1 to 0.15 mm thick, and at full power it welds up to 0.15 mm nickel sheet. This capability saves time, reduces trouble and effort, and minimizes worry in routine welding tasks. It combines a spot welding machine with a USB power bank. The USB output is up to 5 V max 2.4 A, making it a portable fast charging power bank as well as a welding tool. Nine power modes provide precise control for a more consistent welding result. The shell is made from a aluminum alloy, fireproof and drop resistant, with an anodized finish. Use scenarios: Electronics prototyping and tasks that involve nickel sheet spot welds, such as small internal connections and project assemblies. Batteryrelated projects or maintenance that require reliable nickel sheet welding in a compact tool. Field service, maker spaces, or workshops where a portable welding tool combined with USB charging capability is convenient for onsite work.