CERENERGY® Batteries Pass Overcharge and High-Temp Tests; Silumina Anodes Pilot Plant Operational

Rigorous Testing Confirms CERENERGY® Battery Safety

Altech Batteries Limited has reported significant progress in validating its CERENERGY® sodium-nickel-chloride battery technology. Independent testing by Fraunhofer IKTS subjected individual battery cells to a battery of extreme stress tests, including over-discharge, overcharge, high C-rate cycling, and elevated temperature conditions up to 400°C. Impressively, the cells demonstrated robust safety and operational integrity, with no damage or performance degradation observed even under conditions that would typically cause lithium-ion batteries to fail.

These results underscore the resilience of CERENERGY® batteries, which incorporate multiple safety mechanisms and solid-state chemistry that contribute to their stability. Notably, cell failure tests showed that the battery pack continues to operate safely without interruption, a critical feature for real-world applications requiring reliability.

Silumina Anodes™ Pilot Plant Achieves Breakthrough Capacity Gains

In parallel, Altech’s Silumina Anodes™ project has reached a key milestone with the successful commissioning of a pilot plant in Saxony, Germany. This facility produces alumina-coated, spherical silicon particles designed to integrate into lithium-ion battery anodes. By optimising silicon content to 5%, the technology delivers a 50% increase in battery capacity while mitigating common issues like particle swelling and rapid degradation.

The pilot plant overcame initial technical challenges related to handling ultra-fine silicon powders, but is now producing high-quality coated silicon ready for customer evaluation. This advancement positions Altech at the forefront of next-generation battery materials, offering a promising path to higher energy density and longer cycle life.

Long-Term Durability Demonstrated by 28-Year-Old Zebra Battery

Further validating the durability of its underlying chemistry, Altech tested a 28-year-old Zebra battery cell, which performed as if new after decades in storage. This solid-state sodium-nickel-chloride battery remains inert and stable until activated by heating, making it ideal for long-term strategic storage applications such as military reserves. The ability to maintain full capacity and function after nearly three decades highlights the technology’s potential for reliable, long-life energy storage solutions.

Industry Recognition and Independent Endorsement

Altech showcased its CERENERGY® technology at Hannover Messe 2025, the world’s leading industrial trade fair, attracting significant attention from industry leaders, potential partners, and investors. This exposure aligns with Europe’s strategic focus on energy security and clean energy transition, where Altech’s technology offers a safer, cost-effective alternative to conventional lithium-ion batteries.

Complementing these developments, an independent study by DNV, a global leader in energy storage advisory, rated CERENERGY® as a promising emerging technology with expected improvements in energy density, performance, and cost efficiency. While the full report remains confidential, the executive summary reinforces confidence in the technology’s commercial potential.

Financial and Operational Outlook

Despite these technological advances, Altech reported a modest cash balance of AUD 0.4 million at quarter-end, with net cash outflows from operations and investing activities. The company has secured financing facilities, including bearer bonds backed by Malaysian land assets, to support ongoing development and commercialisation efforts. Investors will be watching closely how Altech manages its liquidity and advances partnerships following the positive reception at Hannover Messe.