Stephen Andrues brings unparalleled technical expertise to aircraft battery servicing with 40 years of specialized experience in Nickel-Cadmium aviation batteries. As a FAA Designated Engineering Representative (DER), A&P mechanic, and pilot, Stephen combines hands-on technical knowledge with deep regulatory understanding. He holds responsibility for the company's 30+ FAA-PMA approvals, which enable Ni-Cad Systems to provide approved second-source batteries, temperature sensors, and modification kits to the aviation industry. Stephen's extensive background ensures every battery service meets or exceeds FAA standards while delivering the rapid turnaround times customers require. His dual perspective as both a technician and pilot gives him unique insight into the critical role battery reliability plays in aviation safety and operations, driving the company's commitment to quality and excellence.