RWTH Aachen University, located in Germany, is one of the largest technical universities in Europe. Founded in 2014, the university's PEM (Production Engineering of E-Mobility Components) institute focuses on designing electric mobility solutions. To make electric vehicles more affordable for mass production, engine batteries must be produced in a cost-effective manner. With the help of the OSIsoft PI System, PEM Aachen used operational data to optimize the production process in order to: predict battery quality during production in order to eliminate the cost and time associated with end of line testing, reduce overall production cost by as much as 20%, and shrink batter scrap rates from 10% to 2%.