REG - Ilika plc - Positive Feedback on Safety of Goliath Cells

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RNS Number : 0147X  Ilika plc  18 March 2026

 

18 March 2026

Ilika plc

('Ilika,' the 'Company,' or the 'Group')

 

Ilika Announces Positive Feedback on Safety Testing of Goliath Cells by UK
Defence Agency

 

Independent Test Results Support Defence Applications

 

Ilika (AIM: IKA), the UK pioneer in solid state battery technology, announces
it has received positive feedback from a UK defence agency on safety tests of
its batteries under battlefield conditions, highlighting the potential of the
technology for use in high-risk, mission-critical environments where safety is
paramount.

 

In December 2025, Ilika delivered prototypes to customers across multiple
industries, including an agency which advises the UK Ministry of Defence. The
prototypes were subjected to firing range tests, which showed that:

·    A Goliath 10Ah cell could survive a single shot before a thermal
event was triggered by a second one

·    Low state-of-charge 10Ah Goliath cells did not show a thermal event

·    A Goliath cell showed a delayed reaction before entering thermal
runaway

·    A Goliath cell reached a lower thermal runaway temperature than
conventional Nickel Cobalt Aluminium ("NCA") lithium-ion cells

·    Despite Goliath 10Ah cells storing 3x the energy of conventional NCA
cells being tested under equivalent conditions in the same trial, the Goliath
cells had a similar thermal response

 

This independent validation follows the delivery of Goliath prototypes to
multiple customers in December 2025 and supports Ilika's ongoing engagement
with partners evaluating safety‑critical applications. Under certain abuse
conditions, conventional lithium-ion batteries can enter a state of thermal
runaway, which is a chain reaction in which the battery temperature rises
uncontrollably, leading to a fire or explosion.

 

A power sources subject matter expert for the UK defence agency said: "Ilika's
Goliath cells were screened alongside an extensive range of other battery
technologies (both experimental and mature) as part of our work to understand
the risk associated with increased electrification, and to understand which
battery technologies can offer improved safety over conventional lithium-ion.
We would be very interested in evaluating Ilika's technology further in
applications optimised for deployment in defence environments."

 

Graeme Purdy, CEO of Ilika, said: "Events in recent months have highlighted
that we live in times with a heightened security risk. Mobile energy storage
is important for many modern defence applications, including drones, and we
are working with experts in the field to identify the most appropriate avenues
for commercialising Goliath in this sector, alongside other applications where
enhanced safety provides a clear competitive advantage."

 

ENDS--

 

Enquiries:

 

 Ilika Plc                                             www.ilika.com (http://www.ilika.com/)
 Graeme Purdy, Chief Executive

                                                     Via FTI Consulting
 Jason Stewart, Chief Financial Officer

 Cavendish Capital Markets Limited (Nomad and Broker)  +44 (0)131 220 9772
 Peter Lynch

                                                     +44 (0)131 220 9771
 Neil McDonald

 FTI Consulting (Comms Advisors)                       ilika@fticonsulting.com

 Ben Brewerton

 Elizabeth Adams

 Dwight Burden

 

About Ilika plc

 

Ilika is a global expert in the development of solid-state battery technology
for electric vehicles, medical devices and consumer appliances. The Company's
pioneering next-generation technologies aim to provide scalable, affordable
alternatives to conventional batteries, to industries which need to
incorporate a smaller, lighter, and safer power source in their products.

 

The Company has two product lines. Its Stereax batteries are designed for
powering miniature medical implants, industrial wireless sensors and Internet
of Things (IoT) applications and the Goliath large format batteries are
designed for EV cars and cordless appliances.

 

Through its licensing business model, Ilika supplies its IP portfolio to both
OEMs and manufacturing partners in exchange for a license fee and future
royalties.

 

 

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