In the rapidly evolving world of electric vehicles (EVs), battery technology plays a pivotal role in determining performance, efficiency, and overall user experience. Tesla, a leader in the electric vehicle market, has made a significant choice in its battery design by opting for cylindrical cells, particularly the 18650, 21700, and 46800 formats. This article explores the reasons behind Tesla’s preference for cylindrical cells, examining their advantages, performance characteristics, and implications for the future of electric vehicles.