Amprius’ core battery technology centers on silicon nanowire anode technology, which greatly improves on conventional graphite anodes. It offers two main product platforms: SiMaxx™ and SiCore™. The manufacturing process uses proprietary techniques to fabricate silicon anodes integrated into high-performance cells that enable exceptional charging capabilities, extended cycle life, and compact, lightweight designs suitable for weight- and space-constrained applications like electric aircraft and military equipment.
Amprius provides high-energy lithium-ion batteries featuring silicon anode technology through its SiMaxx™ platform and the newer SiCore™ platform introduced in 2024. These products deliver industry-leading energy density and power performance, supporting applications such as electric vehicles with improved range and charging times.
Significant projects include achieving 370 Wh/kg energy density and over 3000 W/kg power performance with the SiCore cell chemistry in January 2025. The company shipped SiMaxx A-Sample EV Cells to the United States Advanced Battery Consortium in November 2024, expanded production capacity by 800 MWh for SiCore pouch cells in October 2024, and secured a development contract with a Fortune 500 company for custom high-energy SiMaxx pouch cells in October 2024.
Amprius Technologies Inc.’s private investor base comprises retail holders (59.0%), private equity firms (12.0%), and company insiders (approximately $15M in share holdings). Specific individual or early-stage venture capital investors are not publicly disclosed, nor are detailed institutional investor names.
