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Positive Feedback on Safety of Goliath Cells
Ilika plc has announced positive safety test results for its Goliath solid-state battery cells from a UK defence agency, indicating suitability for high-risk applications. Prototypes delivered in December 2025 demonstrated resilience, with a 10Ah cell surviving a single shot before a thermal event was triggered by a second, and low-charge cells showing no thermal event. While a Goliath cell exhibited a delayed reaction before thermal runaway and a lower runaway temperature than conventional NCA cells, it stored three times the energy of comparable NCA cells tested under the same conditions, with a similar thermal response. This independent validation supports Ilika's engagement with partners for safety-critical applications. Disclaimer*
About this update from Ilika Plc
[{"type":"text","content":"\n\n\n \n18 March 2026\nIlika plc\n('Ilika,' the 'Company,' or the 'Group')\n \nIlika Announces Positive Feedback on Safety Testing of Goliath Cells by UK Defence Agency\n \nIndependent Test Results Support Defence Applications\n \nIlika (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.\n \nIn 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:\n· A Goliath 10Ah cell could survive a single shot before a thermal event was triggered by a second one\n· Low state-of-charge 10Ah Goliath cells did not show a thermal event\n· A Goliath cell showed a delayed reaction before entering thermal runaway\n· A Goliath cell reached a lower thermal runaway temperature than conventional Nickel Cobalt Aluminium (\"NCA\") lithium-ion cells\n· 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\n \nThis 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.\n \nA 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 applic...