LG hopes to make advanced battery cells for Tesla in U.S. or Europe, report says Korean company hopes to supply Tesla with 4680 large-format cylindrical cells but faces technology challenges Reuters Tesla's European factory is due to open in the summer in Gruenheide near Berlin. LG Energy Solution aims to build advanced battery cells for Tesla electric vehicles in 2023 and is considering potential production sites in the United States and Europe, two people familiar with the matter told Reuters. Tesla has not yet agreed to a deal that would expand LG's role in its supply chain beyond China, one of the sources said.