Comparing EV and ICE car batteries reveals distinctions in technology, performance, and maintenance. EVs use lithium-ion batteries, offering higher energy density and power, supporting longer ranges and faster acceleration, and requiring less maintenance but demanding specific charging conditions. Conversely, conventional cars utilize less efficient lead-acid batteries, needing more frequent replacements and maintenance but costing less upfront. EV batteries also have a lower environmental impact, particularly when charged with renewable energy.