5 MOSFETs enable spot welding current up to 1500 A, allowing fast, strong welds while maintaining control over the process. 99 adjustable power levels plus realtime gear level display on a digital tube readout provide precise, repeatable settings for different materials and thicknesses, improving consistency and reducing guesswork. Realtime MOSFET temperature protection monitors heat during operation; if the MOSFET temperature exceeds 45 C, the status is displayed to help prevent overheating and protect the equipment. Realtime voltage monitoring protection ensures safe operation; if the input voltage falls outside the 817 V range, a UE indicator is displayed, helping prevent improper power conditions. Practical use scenarios Welding nickel tabs to Liion battery cells for pack assembly or , using current for strong welds with controlled settings. Building or refurbishing small battery modules where precise power levels and protective monitoring reduce the risk of damage during welding. Prototyping or DIY projects involving spot welds on thin metal sheets or connectors, where adjustable current and safety protections improve reliability. Key attributes Function: current spot welding with precise control and safety monitoring Compatibility: supports a range of welding tasks requiring up to 1500 A current and 817 V input Performance: 99 adjustable power levels with realtime readout, plus realtime temperature and voltage protections Protection: temperature threshold alert at 45 C; voltage range protection with UE indicator Safety: realtime monitoring helps prevent overheating and improper power conditions during operation