Amprius Technologies

High Energy Density Silicon Anode Li-ion Batteries

United States of America
Amprius Technologies
High Energy Density Silicon Anode Li-ion Batteries
1180 Page Ave, Fremont, CA 94538 United States of America Regional offices
+1 800.425.8803

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

Li-ion Battery for DronesOur 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.

High energy density lithium-ion battery cells
Image credit: AeroVironment, Inc.
High-density batteries power HAPS UAS
Image credit: AALTO HAPS, an Airbus subsidiary

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.

Silicon Anode Battery Manufacturing Facility

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

drone batteries

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.High Energy Density Battery

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:

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).

Silicon Anode Lithium-Ion Batteries
Amprius Technologies’ silicon lithium-ion batteries have the highest energy density in the industry

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

Graphite Anode Battery Cells Amprius Battery Cells
Anode Capacity (mAh/g) 335-355 1500-2500
Specific Energy (Wh/kg) ~215-285 360-500
Energy Density (Wh/L) ~530-715 890-1400
Charging Time to 80% 30 mins <6 mins
Rate Capability/Power Up to 10C Up to 10C
Cycle Life 500-1000 cycles 200-1200 cycles
Operating Temperature -20 to 60 degrees C -30 to 55 degrees C

“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:

amprius lithium battery cells
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Regional Offices & Locations
Corporate Headquarters United States of America 1180 Page Ave, Fremont, CA 94538 +1 800.425.8803 Contact Website