Contrasting a BYD Blade prismatic cell and Tesla 4680 cylindrical cell with a teardown analysis of design and performance<p>Highlights<p>- Design, materials, performance, and process flow of BYD Blade and Tesla 4680 cell are compared<p>- Tesla uses laser welding; BYD combines laser and ultrasonic for electrode connections<p>- Tesla 4680 cell generates 2× the heat per volume of BYD Blade at a 1 C specific load<p>- PAA and PEO binders identified in Tesla 4680 anode warrant further investigation