When evaluating an electric sedan, you must prioritize the Battery Capacity (kWh) and Energy Density, as these directly impact the vehicle's range. Look for Lithium Iron Phosphate (LFP) batteries for better thermal stability and cycle life, or Ternary Lithium (NCM) for higher energy density. Additionally, verify the Motor Power (kW) and Torque, the Charging Speed (AC vs. DC Fast Charging), and the presence of an efficient Battery Management System (BMS) to ensure long-term performance and safety.