https://www.reuters.com/article/tesla-battery/tesla-looks-to-pave-the-way-for-chinese-battery-makers-to-come-to-u-s-idUSKBN2HB1MK

Tesla Inc wants to shift to a less expensive battery for its electric vehicles but first needs to figure out how to overcome political tensions to get a Chinese partner to build the iron-based batteries near its U.S. factories.