The following thesis work has as object the Supplier Quality management and IATF (International Automotive Task Force) 16949 quality standard milestones application in an electric charging system company. Original problem this work has to face is the quality approach to be utilized in product and production qualification of the EV (Electric Vehicle) charging systems. After a briefly EV charging system overview, the thesis work shifts directly into the “quality problem” analysis. The “quality problem” corresponds to the mismatch between quality standard application between suppliers and customers of EV charging systems. In fact, the first category generally applied a less severe standard, like as the ISO (International Organization for Standardization) 9001.