High Energy Density Silicon Anode Li-ion Batteries

Amprius Technologies is a leading developer of next-generation silicon anode lithium-ion batteries for drones and robotics.

Our products provide the highest known energy density of any commercially available lithium-ion batteries in the world, offering a drop-in replacement for conventional solutions while delivering up to 200% greater run time.

Our advanced silicon anode lithium-ion batteries are designed and manufactured in the U.S., and have been selected by the U.S. Department of Defense as well as industry leaders such as Airbus, BAE Systems, AeroVironment and Teledyne FLIR.

We have recently announced the development of a new 775,000 square foot manufacturing facility located in Brighton, Colorado with the potential to achieve 5 gigawatt-hours.

Amprius has received a number of awards for our state-of-the-art battery technology, including:

• 2023 International Battery Seminar – Best of Show New Product Award
• Fast Company World Changing Ideas 2022 Finalist
• Airbus Defence and Space 2021 Innovative Supplier of the Year Award

Energy dense battery technology for UAVs and unmanned systems

Our patented silicon anode technology features a unique manufacturing process that results in ultra-high energy density batteries. Thanks to our innovative nanowire structure, we have addressed the issue of swelling, which has historically hindered the adoption of silicon. Offering the world’s only commercially available 100% silicon anode, our cell is capable of storing up to ten times more lithium than graphite.

Our advanced silicon anode batteries also demonstrate good cycle life and fast charging times. We have repeatedly demonstrated 80% charging in under six minutes, performance that has been validated by independent third-party labs as well as multiple major aerospace companies.

All this adds up to create a technological leap that enhances the capabilities and effectiveness of UAVs, eVTOLs, aircraft, and unmanned ground vehicles. This advancement paves the way for the evolution of electric mobility in the future.

Amprius Extreme Fast-Charge Demonstration
Extreme fast charge rate of 0-80% state of charge in less than six minutes demonstrated with Amprius’ 370 Wh/kg silicon anode battery:

Learn more: High Energy Density Drone Batteries

Advanced silicon anode batteries for drones and robotics

Our high-performance lithium-ion batteries are ideal for a wide range of mission-critical and commercial applications. In addition to increasing flight times and vehicle ranges, the significantly shortened charging time provides faster turnaround for applications such as drone delivery and UAM (urban air mobility).

Amprius silicon anode lithium-ion batteries outperform traditional graphite anode batteries in a variety of key metrics:

Learn more: Silicon anode battery solutions for drones and robotics

“Nobody Has Anything Like This” – Amprius Factory Tour
A tour of the Amprius facility in Fremont, CA to learn about their manufacturing process, battery testing, and future plans: