The rapid move toward electrification and hybrid systems has transformed transportation. Now, in the face of growing concerns about climate change, energy security, and air quality, these technologies are being brought to the front lines in reducing greenhouse gas emissions, improving fuel efficiency, and transitioning toward more renewable energy sources. Understanding Electrification and Hybrid Systems By definition, electrification in transportation replaces the internal combustion engine with an electric powertrain-either fully electric, such as battery electric vehicles, or BEVs, or partially electric, such as hybrid electric vehicles, or HEVs. Hybrid systems combine a conventional internal combustion engine with an electric motor. The use of both power sources offers increased fuel efficiency and reduced emissions while maintaining extended range and the convenience of quick refueling like traditional internal combustion engine vehicles. 1. Battery Technology: Electrificati...