Cell Testing Services
Supporting Cell Development
Our electrical cell testing services are purpose-built to support the development and optimisation of advanced battery technologies. We specialise in storage, characterisation, and performance testing, with a strong focus on replicating real-world electrical and thermal conditions. This allows us to deliver the critical insights that drive innovation and product reliability.
We test all cell sizes and chemistries, with capabilities of up to 1600A and temperatures ranging from -40°C to +180°C, enabling accurate evaluation under extreme and realistic conditions. We know every project is unique, so we will collaborate with you on bespoke test plans per project. You’ll have direct contact with your dedicated test engineer and data scientist, with regular updates throughout.
What cell testing we offer
We partner with our clients to create customised testing projects that fit your needs. Our team works closely with you to ensure quality results, delivered rapidly. Contact us to learn more.
Characterisation & Performance testing
We focus on electrically cycling the cell under various conditions, enabling you to see the changes in cell behaviour as the cell age and degrade. Conditions can include:
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Thermal cycling via forced air convection or surface cooling
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Drive cycle testing to mimic real world usage
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Fixed gap or pressure cell compression
Storage testing
Storage testing enables you to analyse the changes in cell behaviour due to calendar ageing degradation mechanisms. Conditions can include:
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Various states of charge
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Air cooling/heating via forced air convection thermal chamber
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Storage in compression fixtures to mimic pack conditions
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Periodic voltage measurements to measure self discharge
Our equipment
All testing is conducted in-house by our expert engineers, with over 600 cell cycler channels capable of handling currents of up to 1600A. All our equipment is regularly serviced and calibrated to ensure the data we provide you is top quality.
Thermal control
All projects have two options regarding thermal control:
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Forced air convection thermal chambers, which range in temperature from -40 to 180°C. We have multiple sized chambers up to 1,000L, to ensure all cell sizes can be tested efficiently and reliably.
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Surface cooled testing via Cognition Energy's CellPod Flow Services, which mimics real world conditions giving you accurate data for your project.
Cell cyclers
Cell cycler makes include Basytec, Ivium, Maccor & Neware. For each project we will work with you to ensure the cycler used is the most appropriate for the project.
Cell holders
To ensure excellent contact resistance for electrical tests, our in-house engineering team and workshop can rapidly design and fabricate custom cell test fixtures.
We work with all cell sizes, and include the option on compression plates (constant pressure / constant gap) for pouch, prismatic and blade cells.
For more complicated projects we can work with you to ensure our holders allow you to get the data you require. Example of recent projects include:
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Pouch holders with archimedes principle expansion measurement
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Laser measurement of cell swelling with pouch cell holders
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Pressure mapping with pouch cell holders
Deliverables
All data is delivered by our data scientists in both raw and processed formats as standard - saving you valuable time and accelerating your project. You retain full ownership of your data, and we maintain strict protocols to ensure your intellectual property is securely protected at every stage. Data is delivered at regular intervals, giving you continuous visibility and control to keep your project running smoothly throughout the testing process.
Data formats & processing
While raw data from our cyclers is provided as standard, we also are able to provide customised data formats and structures, for example standardising the structure of data output from different types of cycler, according to the needs of our customers. Furthermore, we can provide weekly data summaries to support with monitoring and tracking longer term projects.
Data visualisation
We provide a data visualisation dashboard as standard, giving you clear insights to make decisions about your project’s next steps. As standard we provide data visualisation for:
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Cycle capacities
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Coulombic efficiency and capacity retentions
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Cycle energy: discharge, charge & total
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Time-series voltages
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Temperature 1 average / max
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Time-series temperatures
Additionally, if health checks are completed, further visualisations are given:
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Capacity and retention at RPT
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Number of ageing cycles at RPT
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DCIR at RPT
Further customisation of data visualization is available if required. Weekly data summary in graphical format is available.
Additional data
Have additional data through third party devices? No problem! These are automatically merged with the raw data, for ease of your analysis.
Why Partner with us
01.
Expert knowledge & independent results for your project
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Large capacity for testing, with over 600 channels
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In-house workshop for your bespoke battery testing holders
04.
Direct communication with engineers throughout the project
05.
Reliable process for your project, assuring you on project dates
For the past 18 months, we have relied on Cognition Energy for our Li-ion cell performance testing needs. Working with Cognition has been an exceptional experience, providing us with fast, accurate, and reliable testing services. The knowledgeable and well experienced staff have consistently been informative and extremely helpful, exceeding our expectations with their personalised approach to our individual needs. We are truly grateful for everything they do.
