Ilika has taken a practical step towards broadening the commercial case for its Goliath solid-state battery platform through a new development partnership with Brompton. The agreement sets up a 12-month joint programme to integrate Ilika’s Goliath prototypes into battery packs for Brompton’s next generation of folding e-bikes. The work is scheduled to begin on 1 July 2026, with battery pack production and on-bike trials expected by mid-2027, subject to technical milestones being met.
Goliath has principally been framed around electric vehicle use, but this collaboration shows Ilika applying the same technology in a smaller, more focused transport category where performance requirements, safety needs and product design constraints may create a clearer early route to adoption.
The project centres on Ilika’s 10Ah Goliath cells, which are designed to offer greater energy density alongside stronger safety characteristics. In Brompton’s case, those features are commercially meaningful. A lighter battery pack has direct relevance for a premium folding e-bike because portability is part of the product’s appeal. At the same time, safety carries particular weight in an urban mobility setting, where users may carry bikes on public transport or store them inside homes. This combination gives the partnership a sharper strategic logic than a generic research exercise.
As the largest bicycle and e-bike manufacturer in the UK and the country’s biggest exporter of bicycles, Brompton offers Ilika a recognised premium partner with a clear product identity. For Ilika, that raises the value of any successful development outcome because it places the technology in a branded consumer product where weight, compactness and safety are visible parts of the purchasing decision.
Ilika plc (LON:IKA) is a pioneer in solid state battery technology enabling solutions for applications in Industrial IoT, MedTech, Electric Vehicles and Consumer Electronics.
