Sumitomo Panasonic Tesla test production MarchAccording to Panasonic, Teslas 4680 cells have already demonstrated that they can yield five times the capacity of smaller models. The Japanese battery maker plans to start test production on the 4680 cells by March 2022 in Japan. https://www.google.com/amp/s/www.teslarati.com/tesla-panasonic-4680-battery-cell-mass-production-plans/amp/