Amprius Completes Qualification Process for SiMaxx Mass Production Tool, Ramping Up Manufacturing Capacity to 2 MWh

Amprius Technologies, Inc. (“Amprius” or the “Company”) (NYSE: AMPX), a leader in next-generation lithium-ion batteries with its Silicon Anode Platform, today announced that it has completed its qualification process for its centrotherm mass production deposition tool (the “centrotherm tool”) to manufacture silicon nanowire anodes. This milestone marks a pivotal step in ramping production capacity to meet the growing demand for its ultra-high-energy SiMaxx cells in electric mobility applications.

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Amprius' Industry-Leading Silicon Anode SiMaxx Battery. (Photo: Amprius)

Throughout its capacity expansion in Fremont, Amprius has been working on its anode fabrication process for the centrotherm tool to achieve the targeted silicon anode performance necessary for Amprius to begin shipping commercial cells. Amprius’ demand pipeline is robust with current SiMaxx capacity sold out through 2024. With this qualification process complete, Amprius is able to complement the Company’s existing roll-to-roll systems with the centrotherm tool. This enables an increase in SiMaxx shipments as Amprius advances its Fremont, California, production ramp to 2 MWh, representing approximately a 10X increase in capacity online exiting 2024.

“This achievement signifies a crucial advancement in scaling up production capacity to address the increasing need for our ultra-high-energy cells in electric mobility applications,” said Jon Bornstein, President of Amprius Labs. “Our primary focus in Fremont is to supply high-energy cells to meet this demand. The successful qualification of our production solution not only accelerates our ramp-up in Fremont this year but also prepares us to manufacture SiMaxx at our gigawatt-hour-scale factory in Brighton, CO.”

In addition to internal validation, Amprius has garnered support from industry partners such as BAE Systems. Robert Davidson from BAE Systems emphasized the importance of Amprius' qualification progress, stating, “The availability of ultra-high-energy cells is paramount to extend the operating capability of our PHASA-35 High-Altitude Long Endurance (HALE) vehicle. We are excited that Amprius is increasing the production capacity of its most advanced cells, aligning with our goal of establishing aircraft capable of addressing next-generation applications in long endurance, high altitude, and communications.”