The Advanced Air Mobility (AAM) industry is transitioning from flight demonstrations to certified large‑scale operations, requiring lifecycle‑oriented, auditable power and battery testing for aircraft safety and airworthiness. This article describes six major electrical test challenges brought by high‑voltage, distributed electric propulsion systems. It presents ITECH’s modular test solutions for cells, battery packs, propulsion, avionics and charging facilities, supporting repeatable electrical validation from R&D to production of low‑altitude electric aircraft.