Accelerating EV Battery Innovation at JLR with the Battery Parameter eXchange Standard
As the automotive industry rapidly transitions to fully electric, battery simulation is becoming an increasingly important tool in EV development. Battery models, and the parameterisation data that underpins them, have become valuable engineering assets.
For JLR, ensuring that this data is accurate, consistent and accessible across its design tools and suppliers is key to developing the next generation of EVs. The company is partnering with About:Energy – a company specialising in battery characterisation and parameterisation – to adopt the open Battery Parameter eXchange (BPX) standard and streamline its modelling processes and strengthen the way data is created, shared and used. The move is creating a more scalable and dependable foundation for JLR’s digital battery development.
Standardisation as the next step
Physics-based cell models sit at the centre of many decisions in electric vehicle battery development. They guide choices around charging strategies, thermal controls and the overall performance of future vehicles. However, the effectiveness of these models often depends on the consistency of the underlying parameterisation data.
Different tools, formats and data structures slow down engineering workflows and can introduce unnecessary uncertainty, especially when contributions are received from multiple suppliers. JLR recognised that a shared approach would allow teams to work more quickly and with greater confidence and accuracy.
| By the numbers | |
|---|---|
| 500+ | downloads of the BPX Standard |
| 400+ | cells with battery models and parameter sets included in The Voltt, covering 40+ cell models used across high-performance battery industries |
| 12 | leading organisations with representatives on the BPX Steering Group |
Introducing BPX
A disassembled cell.
BPX is an open, tool-agnostic standard created as an output of Faraday Institution research. It defines a common structure for lithium-ion battery modelling parameters. By converting information into a single, portable format, BPX allows simulations to run more reliably across software tools and reduces the need to duplicate testing or reformat supplier data. The standard has been downloaded more than 400 times globally, including by automakers, battery developers, software developers and academics.
For a company like JLR, where simulation underpins design and validation, BPX provides a dependable foundation for building and sharing battery models.
About:Energy’s role
About:Energy is a battery data and modelling company founded as a spin-out from Imperial College London and the University of Birmingham. The company specialises in generating the high-quality electrochemical, thermal and degradation data needed to build accurate battery models, drawing on methodologies developed through the Faraday Institution’s Multi-scale Modelling project, for which it is a key commercialisation partner. Its laboratory characterisation, parameter fitting and model-building workflows create digital models of cell behaviour that can be used directly in engineering design, simulation and system-level optimisation.
Building on this capability, About:Energy works with industry to deliver complete BPX-formatted datasets and parameter sets that reflect real cell performance. This derives from detailed cell tear-downs, measurement campaigns and the preparation of validated models that integrate cleanly into customer workflows. For JLR, these BPX files now provide the foundation for a growing digital model library used across engineering, controls development and supplier engagement.
Gavin White, CEO and Co-Founder of About:Energy, setting up battery test equipment.
Implementing BPX at JLR
When it came to implementing the battery modelling standard in its practices, JLR began by reviewing its existing modelling practices and mapping them to the BPX schema. Once the structure was agreed, About:Energy identified gaps and supplied the missing data through testing and parameterisation. The resulting BPX files became the single source of truth for battery model parameters and measurement notes.
What changed for engineers
With consistent input data for electrochemical simulations, engineers had clarity and confidence in data formats and the origin of parameters, freeing time to focus on finding useful insights and product improvements.
This improved simulation throughput allowed JLR teams to analyse charging strategies, optimise thermal management approaches and test design options earlier in the development cycle. Confidence in the results increased because all simulations were based on the same validated data.
BPX provides the universal parameter standards and characterisation approaches, which facilitate the development of electrochemical model and characterisation work in JLR.”
Dr Haosong He, Senior Simulation and Modelling Engineering, JLR, and member of the BPX Steering Group
Business outcomes for JLR
A JLR EV dashboard.
The adoption of BPX, supported by About:Energy, has led to several clear benefits:
- Faster deployment of new cell electrochemical models
- Reduced reliance on physical cell testing
- Expanded simulation coverage and earlier design exploration
- More consistent collaboration with suppliers
- A scalable modelling ecosystem that grows with new chemistries and vehicle programmes
These improvements support JLR’s ambition to deliver high-performance electric vehicles efficiently and sustainably.
The BPX-based electrochemical model delivered by About:Energy provides a foundation for the future development of JLR’s multiphysics platform. With high-fidelity, fully characterised parameters provided by About:Energy, JLR can significantly reduce the internal characterisation work and streamline the overall model development process.
By adopting the BPX standard, JLR has strengthened its battery modelling capability. The move has improved data transparency, increased simulation throughput and helped engineers work more effectively. It demonstrates how a consistent approach to battery parameters can deliver real value across the development process and supports JLR’s wider goals in the transition to electrified vehicles.
JLR’s early adoption of BPX highlights its forward-thinking approach and positions it as a leader in shaping how digital battery development is carried out across the industry.
Get involved with BPX and find out more
BPX is supported by a growing group of automotive companies, suppliers and research organisations, through membership of the BPX Steering Group, comprising experienced battery modellers organisations across Europe. It advises the Faraday Institution on strategy for the future evolution of the BPX standard to ensure the needs of industrial users will continue to be met as battery technologies advance and industry needs evolve.
- Check out the members of the BPX Steering Group
- Download version 1.1 of the BPX standard
- To find out how BPX could help your business please contact [email protected]
- To contact About:Energy: [email protected]
The Faraday Institution’s leadership of the Battery Parameter eXchange continues to be enabled thanks to funding from the Battery Innovation Programme, through the Department for Business and Trade and delivered by Innovate UK.
Success story published April 2026.