Amprius Technologies, Inc. has delivered SiCore® battery cells to multiple advanced drone and unmanned aerial vehicle (UAV) customers from its Fremont, California pilot line.
These include 450 Wh/kg high-energy battery cells for Airbus subsidiary AALTO and balanced energy-and-power cells for drone manufacturers supporting tactical and commercial missions.
Amprius customer qualification often begins with prototype SiCore® cells built at the company’s Fremont facility, accelerating the transition from development to deployment for advanced applications. Recent examples include deliveries to AALTO and other UAV leaders for high-altitude and tactical drone missions. The newly shipped 450 Wh/kg SiCore® cells are engineered to support even longer-duration flights, where energy density and weight are mission-critical.
Amprius’ Fremont headquarters serves as its center for R&D, prototyping, and pilot-scale production, where the SiCore® platform was developed, validated, and transitioned into commercial deployment. This same team led the development of the SiCore® 370 Wh/kg High Power cell, designed to deliver exceptional energy and power performance in a compact, mission-ready format.
Dr. Kang Sun, CEO of Amprius Technologies, stated, “We are expanding our pilot production in Fremont to meet a strong increase from leading drone manufacturers. Shipping our industry-leading SiCore® cells to AALTO and other leading drone OEMs marks another key milestone in our commercial scale-up. From high-energy HAPS cells to balanced-performance drone batteries, we’re now delivering solutions that meet a wide range of advanced mission needs.”
Pierre-Antoine Aubourg, Chief Technology Officer at AALTO, added, “Amprius’ SiCore® cells represent a major advancement in energy performance, supporting the ultra-lightweight, long-endurance requirements of our high-altitude operations. Their silicon anode technology has already enabled Zephyr to operate in the stratosphere overnight for months at a time, an unprecedented milestone in persistent flight. We look forward to working with Amprius as we qualify their next-generation cells to power the future of Stratospace innovation.”
While Fremont enables rapid development and early-stage production, Amprius is scaling its global supply chain to meet growing commercial demand. The company has secured more than 1.8 GWh of manufacturing capacity through international contract partnerships, including a strategic agreement in South Korea, to support broader adoption across aerospace, defense, and electric mobility markets.
