Tesla CEO Elon Musk said the U.S. automaker had signed a $16.5 billion deal to source chips from Samsung Electronics, a move expected to bolster the South Korean tech giant’s loss-making contract manufacturing business.

Electric vehicle costs in the US could drop by $6,000 or more. Ford, GM, and Tesla have all invested heavily in LFP battery production in the US, partnering with LG, Samsung, and in the case of Ford, using tech from Chinese battery giant CATL. Stellantis has also partnered with CATL to build an LFP factory in Spain.