Amprius Ships New High-Performance 6.3Ah Silicon Anode Cylindrical Cell to Fortune 500 Company

Rhea-AI Summary

Amprius Technologies (NYSE: AMPX) has announced the shipment of its new 6.3Ah 21700 SiCore™ cell to a Fortune 500 company in the Light Electric Vehicle (LEV) sector for evaluation. The new cell demonstrates significant performance improvements with an energy density of 315 Wh/kg, delivering over 25% more capacity than standard 5.0Ah 21700 cells while maintaining a high-power 3C discharge rate.

Key features include 800 cycles at 80% depth of discharge (DOD), extending battery lifespan and reducing replacement costs. The cell's drop-in compatibility enables manufacturers to enhance performance without system redesigns. While initially targeting the LEV market, the technology is also suitable for fixed wing aviation and AI applications like robotics. Amprius has secured manufacturing partnerships for GWh-scale production capacity.

Positive

• 25% higher capacity than standard 5.0Ah cells
• High energy density of 315 Wh/kg
• 800 cycles at 80% DOD performance
• Secured GWh-scale manufacturing partnerships
• Drop-in compatibility reduces implementation costs

Negative

• Product still in evaluation phase
• Dependent on Fortune 500 company's approval
• initial market focus on LEV sector

Insights

Battery Technology Expert

Amprius' shipment of 6.3Ah 21700 SiCore cells represents a significant technical milestone in commercial cylindrical cell development. The 25% capacity increase over standard 5.0Ah cells while maintaining the 21700 form factor demonstrates the potential of silicon anode technology in practical applications. At 315 Wh/kg, these cells substantially outperform typical graphite-based 21700 cells that generally achieve 240-270 Wh/kg.

The 800 cycles at 80% depth of discharge addresses one of silicon anode technology's historical challenges - cycle life degradation from silicon expansion/contraction. While not matching the longevity of graphite anodes (typically 1000+ cycles), this represents viable performance for many applications, particularly in the LEV sector where weight and energy density often outweigh extreme longevity requirements.

The "drop-in compatibility" claim is particularly noteworthy, as most advanced battery chemistries require modified battery management systems. If Amprius has indeed achieved this compatibility while delivering higher energy density, it eliminates a significant barrier to adoption for manufacturers looking to enhance product performance without redesigning their systems.

The Fortune 500 evaluation represents a important validation step before commercialization. Success here could accelerate market entry, especially in weight-sensitive applications where the energy density advantage translates to meaningful performance improvements.

Manufacturing Strategy Analyst

Amprius' announcement of secured manufacturing partnerships for GWh-scale production is a critical component of this news. Silicon anode technology has historically faced manufacturing scalability challenges, with many promising lab results failing to translate to commercial production. Having partnerships in place suggests Amprius has potentially overcome key production hurdles.

The stated 2025 commercialization timeline indicates confidence in both the technology's readiness and manufacturing capabilities. The company appears to be executing a staged commercialization strategy - targeting evaluation by a major customer before scaling production, which reduces capital risk.

The focus on the LEV market represents a strategic choice of entry point. This sector demands high energy density but has more moderate cycle life requirements than electric vehicles, aligning well with the 800-cycle performance. The mention of fixed-wing aviation and AI applications signals a diversification strategy into premium markets where the energy density advantages command higher margins.

For a company with Amprius' market cap of approximately $245 million, securing a Fortune 500 customer could significantly impact revenue trajectory. While this announcement represents only an evaluation shipment, not a confirmed order, it demonstrates commercial interest in their technology from established industry players.

Investors should note that moving from evaluation to production orders typically requires 6-12 months of customer testing, suggesting that meaningful revenue impact would likely begin in late 2025 at the earliest, assuming successful evaluation.

Delivers 25% more capacity than 5Ah 21700 cells with higher energy density and long cycle life

FREMONT, Calif.--(BUSINESS WIRE)-- Amprius Technologies, Inc. (“Amprius” or the “Company”) (NYSE: AMPX), a leader in next-generation lithium-ion batteries with its Silicon Anode Platform, today announced it has shipped its new 6.3Ah 21700 SiCore™ cell to a Fortune 500 company in the Light Electric Vehicle (LEV) sector for evaluation. The new cell sets a new standard in the industry for energy density in this widely used format.

Amprius Ships New High-Performance 6.3Ah Silicon Anode Cylindrical Cell to Fortune 500 Company (Graphic: Business Wire)

With an energy density of 315 Wh/kg, the 6.3Ah SiCore cell builds on Amprius’ proven technology, delivering over 25% more capacity than a standard 5.0Ah 21700 cell while maintaining a high-power 3C discharge rate. It achieves 800 cycles at 80% depth of discharge (DOD), extending battery lifespan and lowering replacement costs. Designed for seamless integration, its drop-in compatibility allows manufacturers to boost performance without the need for costly system redesigns.

“Our new 6.3Ah 21700 SiCore cell has attracted strong interest from leading OEM manufacturers because it delivers a significant improvement in battery performance,” said Dr. Ionel Stefan, CTO of Amprius Technologies. “With commercialization of this cell set for this year, we are excited to offer a high-capacity, long-lasting solution that meets the growing demand for more efficient energy storage solutions across multiple industries.”

While the initial focus for this 6.3Ah SiCore cell is on the LEV market, the high energy density and extended cycle life make it well-suited for a range of applications, including fixed wing aviation and AI applications such as robotics.

Amprius has secured manufacturing partnerships to support large-scale production, ensuring GWh-scale capacity to meet growing demand. As the need for high-performance energy storage continues to rise, Amprius remains focused on delivering advanced battery technology to power the future of electrification.

For more information, visit www.amprius.com.

About Amprius Technologies, Inc.

Amprius Technologies, Inc. is a leading manufacturer of high-energy and high-power lithium-ion batteries, producing the industry’s highest-known energy density cells. The company’s commercially available SiMaxx™ batteries deliver up to 450 Wh/kg and 1,150 Wh/L, with third-party validation of 500 Wh/kg and 1,300 Wh/L. Amprius expanded its product portfolio to include the SiCore™ platform in 2024, significantly enhancing its ability to serve additional customer applications. The company’s corporate headquarters is in Fremont, California, where it maintains an R&D lab and a MWh scale manufacturing facility for the fabrication of silicon anodes and cells. To serve customer demand, Amprius entered into several agreements to secure over 1.8GWh of contract manufacturing capacity available today. For additional information, please visit amprius.com. Also, see the company’s LinkedIn and Twitter pages.

Forward-Looking Statements

This press release includes “forward-looking statements” within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934, each as amended. Forward-looking statements may be identified by the use of words such as “estimate,” “plan,” “project,” “forecast,” “intend,” “expect,” “anticipate,” “believe,” “seek” or other similar expressions that predict or indicate future events or trends or that are not statements of historical matters. These forward-looking statements include, but are not limited to, statements regarding the timing and ability of Amprius to commercialize this new cell, the potential applications and addressable markets of this new cell, the performance of this new cell, the manufacturing capacity that Amprius is able to provide under the support of its contract manufacturers, and the benefits of this new cell to manufacturers. These statements are based on various assumptions, whether or not identified in this press release, and on the current expectations of Amprius’ management and are not predictions of actual performance. Actual results could differ materially from these forward-looking statements as a result of certain risks and uncertainties. These forward-looking statements are subject to a number of risks and uncertainties, including Amprius’ liquidity position; risks related to the rollout of Amprius’ business and the timing of expected business milestones; the capacity and stability of Amprius’ contract manufacturers; the ability of Amprius and its contract manufacturers to commercially produce high performing batteries; the effects of competition on Amprius’ business; supply shortages in the materials necessary for the production of Amprius’ products; and changes in domestic and foreign business, market, financial, political and legal conditions. For more information on these risks and uncertainties that may impact the operations and projections discussed herein can be found in the documents we filed from time to time with the Securities and Exchange Commission (the “SEC”), all of which are available on the SEC’s website at www.sec.gov. There may be additional risks that Amprius does not presently know or that Amprius currently believes are immaterial that could also cause actual results to differ from those contained in the forward-looking statements. In addition, forward-looking statements reflect Amprius’ expectations, plans or forecasts of future events and views as of the date of this press release. These forward-looking statements should not be relied upon as representing Amprius’ assessments as of any date subsequent to the date of this press release. Accordingly, undue reliance should not be placed upon the forward-looking statements. Except as required by law, Amprius specifically disclaims any obligation to update any forward-looking statements.

View source version on businesswire.com: https://www.businesswire.com/news/home/20250306597630/en/

Investors

Tom Colton, Greg Bradbury

Gateway Group, Inc.

949-574-3860

IR@amprius.com

Media

Zach Kadletz, Brenlyn Motlagh

Gateway Group, Inc.

949-574-3860

Amprius@Gateway-grp.com

Source: Amprius Technologies, Inc.

FAQ

What are the key specifications of Amprius' new 6.3Ah SiCore battery cell (AMPX)?

The cell features 315 Wh/kg energy density, 25% more capacity than 5.0Ah cells, 3C discharge rate, and 800 cycles at 80% DOD.

Which markets is Amprius (AMPX) targeting with the new 6.3Ah battery cell?

Primary focus is the Light Electric Vehicle (LEV) sector, with additional applications in fixed wing aviation and AI robotics.

When will Amprius (AMPX) begin commercial production of the 6.3Ah SiCore cell?

Commercialization is set for 2024, with manufacturing partnerships secured for GWh-scale production.

What advantages does the new Amprius 6.3Ah cell offer for manufacturers?

It offers drop-in compatibility for easy integration, higher energy density, and longer cycle life without requiring system redesigns.