Muhammad Usman Tahir is an electrical engineer specializing in sustainable energy systems, with expertise in lithium-ion batteries and power electronic converters. He is currently a postdoctoral researcher at Aalborg University, working on reliability and condition monitoring of PV inverters through data-driven diagnostics, fault detection, and lifetime analysis of power electronic systems in solar energy applications. During his PhD at Aalborg University, he developed reliability-oriented fast charging strategies for lithium-ion batteries and EV chargers. His work optimized multi-stage constant-current (MSCC) charging protocols, improving battery lifetime, charging efficiency, and converter reliability. He also implemented seamless CAN-based communication between DC-DC converters and battery packs and conducted extensive experimental studies on battery-converter interactions. His broader research interests include BESS for integrated energy-mobility systems, battery degradation modeling, second-life battery applications, V2X technologies, and intelligent control of power electronics. He is particularly interested in system-level challenges spanning hybrid duty-cycle degradation, advanced BMS development, and circular economy strategies for future battery value chains. Motivated by the transition toward clean and electrified energy systems, he aims to develop reliable, scalable, and sustainable battery and power electronic technologies that support resilient energy systems.