No one would argue the necessity and usefulness of welding. It is often the best and sometimes the only option in fabrication and repair. And so long as the work can be brought into a welding shop, there are few challenges in the process. But when work is required out in the field, more specifically in remote areas the challenges abound. Welding equipment has traditionally been large, heavy and bulky and necessarily so. Until now. The Tactical Welder is a completely portable welding solution that offers the power that used to take a room full of equipment. Lithium battery powered arc welding is here. The Tactical Welder portable welding tool is powered by a 528 Wh lithium-ion battery pack. A state-of-the-art electronic battery management system (BMS) safely controls charging and discharging functions. The weld gun is a 300 A industrial grade spool gun wire feed welder.