Amprius and Matternet Partner to Advance Drone Delivery

Amprius Technologies, Inc. (“Amprius” or the “Company”) (NYSE: AMPX), a leader in silicon anode lithium-ion batteries, and Matternet, the world’s only FAA Type Certified drone delivery company, today announced a strategic collaboration to advance the performance and economics of autonomous aerial delivery through high-energy density silicon anode cells. Amprius cells are now deployed in Matternet’s M2 aircraft, and the companies are extending their work to battery solutions optimized for Matternet’s next-generation platform.

As physical AI moves into the real world — with small, electric autonomous aircraft transporting goods through cities — batteries are becoming a strategic driver of platform performance. In drone delivery, battery performance shapes not only aircraft capability, but also network design, asset utilization, and cost per delivery.

“As the world’s leading urban drone delivery player, we partner with the best technology companies in the world to push what’s possible,” said Andreas Raptopoulos, Founder and CEO of Matternet. “Amprius delivers best-in-class battery performance, and in drone delivery that translates directly into commercial advantage. Every additional mile of range expands our network coverage. Every minute saved in charging increases fleet utilization. And every gram saved can translate into greater payload capacity. With Amprius, we have the opportunity to engineer that technology around our aircraft, our network model, and our cost-per-delivery targets.”

High-Energy Density Cells for Commercial Drone Delivery

Amprius’ silicon anode cells deliver up to twice the energy density of conventional graphite-based batteries, a critical advantage in aviation, where battery weight directly constrains range, payload, and economics.

For Matternet, this partnership is focused on translating battery performance into commercial operating advantage. Amprius and Matternet will work together to optimize cell selection, form factor, thermal performance, charge rate, and cycle life for Matternet’s next-generation aircraft.

The goal is to go beyond cell-level performance and tune the battery system around Matternet’s aircraft architecture and delivery network, improving aircraft availability, expanding service areas, and reducing cost per delivery as Matternet scales commercial operations.

“At Amprius, we are focused on partnering with category leaders in applications where battery performance changes what is possible,” said Tom Stepien, CEO of Amprius Technologies. “Matternet is exactly that kind of partner, a company with a proven certified platform, real commercial operations, and a clear path to scale. By working closely with Matternet’s engineering team, we can optimize our silicon anode technology for their aircraft, operating models, and cost-per-delivery objectives. That kind of alignment is how battery innovation translates into real-world commercial advantage.”

With Amprius cells already flying in Matternet’s M2 fleet, the companies are now focused on deeper integration for Matternet’s next-generation platform, with Amprius targeting volume production readiness aligned with Matternet’s fleet expansion plans beginning in early 2027.

About Amprius Technologies, Inc.

Amprius Technologies, Inc. is a leader in advanced lithium-ion battery technology, delivering high-energy and high-power silicon-anode batteries with up to twice the energy density, range, and flight time of conventional graphite-based cells. Headquartered in Fremont, California, Amprius operates an R&D lab and pilot manufacturing facility for silicon anodes and cells. To support scalable production, the Company employs a contract manufacturing strategy, enabling rapid capacity expansion with minimal capital investment. Committed to driving innovation in energy storage, Amprius powers next-generation applications in aerospace, defense, and mobility. For additional information, please visit amprius.com

About Matternet

Matternet is a leading commercial drone delivery platform for urban and suburban environments. The company builds the Matternet M2 drone, the Matternet Station, and the Matternet Software Platform and operates its technology directly for customers or in partnership with logistics organizations such as UPS. Matternet has achieved many industry firsts, including being the first company authorized for commercial Beyond Visual Line of Sight (BVLOS) drone delivery operations over cities in Switzerland, the first to launch routine revenue-generating drone delivery operations in the U.S., and the first to achieve standard Type Certification and Production Certification from the U.S. Federal Aviation Administration. Matternet is partnered with UPS and Ameriflight, which have received approval from the Federal Aviation Administration to operate the Matternet M2 under Part 135. Matternet has operated commercially for more than a decade, beginning with humanitarian drone delivery missions in 2014, launching B2B healthcare operations in Europe in 2017 and the U.S. in 2019, and expanding into B2C drone delivery operations in Silicon Valley in 2024. To date, Matternet’s technology has enabled more than 60,000 commercial flights across dense urban and suburban environments in the U.S. and Europe.