Amprius Technologies

Amprius Technologies makes silicon anode lithium ion battery cells for drones, aircraft, electric vehicles, robotics and wearables. Silicon gives its cells higher energy density, so they pack more power into a compact size for longer range, faster charging and higher payloads.

The company says its SiCore cells deliver the highest energy density on the market, with batteries rated up to 500 Wh per kg. Cells charge from 0 to 80 percent in as little as six minutes and keep their performance through 1,300 full charge cycles. They operate from -30 C to 60 C. Safety testing includes the US military nail penetration test and UN38.3 certification for transporting lithium ion cells.

Amprius serves unmanned aviation, manned aviation, light electric vehicles, electric vehicles and AI and robotics. Customers and partners named on the site include Nokia Drone Networks, which integrates SiCore batteries, and a UAS manufacturer that placed a repeat purchase order worth US$35 million. Industry feedback comes from AALTO and Prismatic.

Manufacturing is based at an MWh scale site in Fremont, California. GWh scale contract manufacturing partnerships in China support larger volumes, and the company plans to expand these across Asia and Europe. SiCore cells are available in large volumes with shorter lead times.

Amprius was founded in 2008. It finalised its silicon anode design in 2014, started kWh scale manufacturing in 2016 and secured its first sales in 2018. It completed an IPO and began trading on the NYSE in 2022, and in 2024 it launched an MWh scale expansion and GWh scale contract manufacturing partnerships.

The company holds ISO 9001:2015 and AS9100:2016 certifications. It offers a product selector to help customers choose the right cell for their application, and it lists careers and news on its site.

Services

• SiCore silicon anode battery cells
• Product selector
• Batteries for unmanned aviation
• Batteries for manned aviation
• Light electric vehicle batteries
• Electric vehicle batteries
• AI and robotics batteries
• Contract manufacturing partnerships
• Large volume cell supply