Application‑based segmentation partitions the market into Starting, Traction, Energy Storage, and Auxiliary segments, reflecting distinct functional roles within electric vehicles. The Starting segment, supplying cranking power for internal combustion hybrids, remains the largest, representing approximately 40 % of market revenue due to its prevalence in hybrid‑electric powertrains. Traction batteries, delivering propulsion energy in pure electric models, account for 35 % of the market, propelled by the rapid adoption of EVs in urban mobility. Energy Storage applications, encompassing regenerative braking capture and grid‑interactive functions, hold a 15 % share, supported by increasing emphasis on vehicle‑to‑grid integration. The Auxiliary segment, providing power for lighting, infotainment, and climate control, contributes the remaining 10 %, reflecting its ancillary yet indispensable role. These application categories collectively define the market taxonomy and drive differential growth patterns across the Electric Vehicle Lead‑acid Battery landscape.