Amprius Signs Contract Manufacturing Deal with South Korean Battery Firm

Amprius Technologies, a California-based developer of silicon anode batteries, has entered into a contract manufacturing agreement with a leading, unnamed South Korean battery manufacturer. The move is intended to bolster Amprius’ production capabilities for its SiCore battery platform, aimed at high-demand sectors such as aerospace, defence, and electric mobility.

The agreement allows the South Korean partner to manufacture SiCore silicon anode cells in accordance with Amprius’ specifications. The additional capacity will support both current and next-generation battery platforms, and is part of the company’s wider strategy to scale its operations globally. Amprius said the collaboration “represents a pivotal step in Amprius’ journey to scale its SiCore platform,” adding that the Korean partner “brings extensive experience in manufacturing advanced lithium-ion batteries across a range of form factors and cell chemistries.”

The new facility is expected to complement Amprius’ previously announced 1.8 gigawatt-hours (GWh) of contracted production capacity. This will enable the company to “deliver at volume and compete more effectively across global markets,” it said. One of the production use cases includes a SiCore cell optimized for high-power and high-energy performance, specifically designed for an advanced drone platform.

Amprius initially introduced its SiCore cells in January, positioning them for aerospace and defence applications. At the time, it noted that its global manufacturing network was intended to facilitate cost-competitive delivery at scale. The use of silicon anodes offers an alternative to graphite, a material whose supply chain is largely dominated by China. The U.S. government has been actively supporting domestic silicon anode production, backing Amprius and others with funding to build facilities.

Silicon-based batteries are viewed as a key enabler for next-generation energy storage, offering higher energy density and faster charging. Amprius said the new manufacturing partnership is a step toward fulfilling growing demand for advanced batteries in critical sectors worldwide.