High-tech battery manufacturing facility to expand in Fremont

Some of the world’s most powerful batteries are made right here in the Bay Area. Thursday, the company that produces them unveiled a major expansion. “Our battery has the highest energy density and the power density in the industry,” said Amprius CEO Kang Sun. The battery, a silicone anode lithium ion cell, is made by Amprius. MORE: PG&E, Elon Musk…