Amprius Technologies, Inc.

Amprius Technologies, Inc. is a leading developer and manufacturer of high-energy and high-power lithium-ion batteries, specializing in advanced silicon anode technology. Headquartered in Fremont, California, the company's mission is to deliver the highest energy density battery cells on the market, enabling longer range, faster charging, and higher payloads across various applications without compromising performance.

The company's product portfolio includes silicon anode lithium-ion batteries under the SiMaxx™ and SiCore™ platforms. SiMaxx batteries are noted for delivering up to 450 Wh/kg and 1,150 Wh/L, with third-party validation reaching 500Wh/kg and 1,300 Wh/L, while SiCore batteries offer up to 400 Wh/kg. These advanced battery solutions cater to critical market segments such as unmanned aerial systems (drones), manned aviation, electric vehicles (EVs and light electric vehicles), AI & Robotics, and defense applications.

Under the leadership of CEO Tom Stepien, who assumed the role in May 2025 (effective January 1, 2026), Amprius Technologies has achieved significant milestones. In March 2026, the company was recognized by TIME as one of America's Top GreenTech Companies and secured a $21 million purchase order for electric two and three-wheelers. Additionally, Amprius announced a strategic U.S.-based manufacturing partnership with Nanotech Energy in February 2026 to scale domestic silicon anode battery production. The company reported strong financial performance for Q4 2025, with a 137% year-over-year revenue growth and a 24% gross margin, achieving positive EBITDA ahead of schedule. Amprius is expanding its manufacturing capabilities with a MWh-scale facility in Fremont and GWh-scale partnerships, including a new facility in Brighton, Colorado.