Electric vehicles are breaking through into mainstream automotive sales with many governments and companies pledging full electric vehicle conversions in the 2020s. The limiting factor for these vehicles is a strong supply of safe, reliable, and highly efficient battery packs. Battery manufacturers are responsible for ensuring that every battery pack meets these tight standards while keeping volume high to meet increasing demands. Manufacturers must conduct a variety of mechanical and electrical tests that are performed throughout battery construction, using fast and accurate test and measurement solutions. One such solution is the Keithley 3706A System Switch and Multimeter paired with a 2460 or 2461 High Current Source Measure Unit (SMU) to conduct the busbar weld impedance test.