System voltage: 12 14.6V DIY 12V spot welding machine PCB circuit board, 18650 lithium battery assembly control board Portable, stable, reliable Key benefits Provides a dedicated PCB control solution for a DIY 12V spot welding machine and for 18650 battery assembly Supports 18650 lithium cells for battery pack construction and assembly Portable design enables both bench work and on site use without compromising stability or reliability Stable, reliable operation helps achieve consistent welds and dependable performance in battery projects Compatibility and purpose Designed for use with 18650 lithium battery assemblies Suited for DIY spot welding applications and battery pack assembly and maintenance Use scenarios Scenario 1: Build a custom 18650 battery pack for portable power by assembling cells with the PCB control board Scenario 2: Perform spot welding on 18650 cells to create or battery packs for DIY electronics or backup power systems Scenario 3: Carry the compact PCB for field work to assemble or service 12V battery packs in portable devices or projects