Representatives from five major European organisations – AVL, BMW Group, Fortescue ZERO, SINTEF and TNO – have joined the newly formed Steering Group for the Battery Parameter eXchange (BPX), an open standard designed to streamline lithium-ion battery modelling across the industry. The group also includes UK battery start-ups and researchers from the Faraday Institution.
BPX defines a common set of parameters for physics-based battery models, aiming to reduce costs and improve interoperability across the battery value chain. The Steering Group will advise on the standard’s strategic direction and roadmap, ensuring it evolves in line with industrial needs and technological advances.
A new version, BPX v0.4, includes key updates such as support for single-state hysteresis models, thermodynamic degradation modes, and greater flexibility in parameter definitions. Over 330 users have downloaded the standard since its release.
Developed by the Faraday Institution with contributions from the PyBaMM and DandeLiion communities, BPX is currently funded through UK research programmes. Long-term plans include transitioning to a membership-funded standards body, with the Steering Group evolving into a technical advisory board.
The initiative supports the UK’s Battery Innovation Programme and aligns with its designation of batteries as a ‘frontier industry’ under the Advanced Manufacturing Sector Plan.
Image: European organisations joined the Steering Group for the Battery Parameter eXchange
