General Motors led a $139m Series D funding round in SES, a developer and manufacturer of Li-Metal rechargeable batteries. The round was joined by SK, Temasek, Applied Ventures, Shanghai Auto and Vertex. "This new round of funding will help accelerate technology development, significantly expand our technical, business and manufacturing teams, and expedite the commercialization of Li-Metal batteries," Qichao Hu, SES Founder and CEO.