Samsung SDI reportedly collaborated with two Chinese companies to use stacking for the manufacture of Gen 5 batteries. The South Korean brand may apply this technology to provide improved battery life with the Galaxy S24 Ultra.

source https://www.gadgets360.com/mobiles/news/samsung-s24-ultra-battery-life-longer-sdi-testing-stacking-method-chinese-companies-galaxy-report-3974228#rss-gadgets-all