Highlights
– R&D work developed an expanded CERENERGY(R) module concept, increasing capacity from 48 to 72 cells per module in a beehive arrangement
– Each five-module pack now delivers 90 kWh (from 60 KWh) of energy while retaining the existing casing and factory setup, requiring no infrastructure changes.
– System-level benefits include higher energy and power density, improved thermal behaviour, and cost reductions of ~30% at module and pack level
– Thermal modelling confirms uniform heat distribution with no excessive build-up, resulting in lower internal resistance and stable performance
– Engineering refinements-simplified cell contacting, optimised welding, repositioned sensors, and a redesigned frame-improve layout, assembly efficiency, and long-term reliability
– The redesign enhances competitiveness in EUR/kWh and strengthens scalability towards full industrial production
– No final decision on final design as yet – further modelling work
– R&D work on incorporation into a grid pack has commenced
Importantly, this innovation requires no modification to the established factory design and setup. At the system level, the improvements deliver higher energy and power density, enhanced thermal performance, and cost reductions of approximately 30% at both the module and pack levels.
The redesign reduces inactive or unheated areas within the battery, with R&D efforts focused on analysing thermal distribution and heat accumulation during operation. Thermal modelling confirms that effective heat management is achievable, showing no excessive build-up during charging and discharging. Results demonstrate a uniform temperature profile, leading to lower internal resistance and more stable performance under load.
From an engineering perspective, the new module concept also resolves practical design challenges. It introduces simplified cell contacting, creating additional internal space and a cleaner layout. Further refinements include optimised welding techniques, repositioned temperature sensors, and a redesigned frame-collectively enhancing assembly efficiency, structural robustness, and long-term reliability.
At the system level, these advancements deliver higher energy and power density, improved thermal behaviour, and cost reductions of around 30% at both the module and pack levels. This results in a more competitive EUR/kWh and strengthens scalability towards full industrial production.
A final decision on the design has not yet been reached, as additional modelling work continues alongside ongoing R&D focused on achieving seamless integration into a grid-scale battery pack, ensuring optimised performance, reliability, and cost-efficiency for future commercial deployment.
Group Managing Director, Iggy Tan said ‘We are very encouraged by the outcome of our latest CERENERGY(R) development program. Achieving a 72–cell beehive module design that lifts pack capacity to 90 kWh-without any change to the existing casing or factory setup-is a significant milestone. Not only does this innovation increase energy density, it also simplifies engineering, enhances thermal management, and reduces cost by nearly 30%. These results strengthen the commercial competitiveness of CERENERGY(R) and confirm its scalability towards full industrial production. With each step, we are moving closer to delivering a next-generation, high-performance battery solution for the global energy storage market.’
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About Altech Batteries Ltd:
Altech Batteries Limited (ASX:ATC,OTC:ALTHF) (FRA:A3Y) is a specialty battery technology company that has a joint venture agreement with world leading German battery institute Fraunhofer IKTS (‘Fraunhofer’) to commercialise the revolutionary CERENERGY(R) Sodium Alumina Solid State (SAS) Battery. CERENERGY(R) batteries are the game-changing alternative to lithium-ion batteries. CERENERGY(R) batteries are fire and explosion-proof; have a life span of more than 15 years and operate in extreme cold and desert climates. The battery technology uses table salt and is lithium-free; cobalt-free; graphite-free; and copper-free, eliminating exposure to critical metal price rises and supply chain concerns.
The joint venture is commercialising its CERENERGY(R) battery, with plans to construct a 100MWh production facility on Altech’s land in Saxony, Germany. The facility intends to produce CERENERGY(R) battery modules to provide grid storage solutions to the market.
Source:
Altech Batteries Ltd
Contact:
Corporate
Iggy Tan
Managing Director
Altech Batteries Limited
Tel: +61-8-6168-1555
Email: info@altechgroup.com
Martin Stein
Chief Financial Officer
Altech Batteries Limited
Tel: +61-8-6168-1555
Email: info@altechgroup.com
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