IN Brief:
- Terma and Danube Cell Manufacturing have signed an MoU covering joint battery development, testing, and validation.
- Terma's platform combines regenerative power conversion, programmable measurement, and battery-characterisation functions.
- The collaboration targets application-specific cell development for aerospace, defence, and other demanding programmes.
Terma and Austrian battery developer Danube Cell Manufacturing have signed a memorandum of understanding covering joint battery development, testing, and validation. The companies plan to combine Terma’s electronics, software, and regenerative battery-test technology with Danube Cell’s custom cell development and manufacturing capability, with aerospace and defence among the intended application areas.
The collaboration is aimed at reducing the distance between a cell concept and an application-specific battery design. Capacity measured under a standard charge-discharge cycle is only one part of that work: cells for aircraft, defence systems, industrial equipment, or other demanding platforms have to be characterised across current loads, temperature conditions, internal resistance, ageing, transient behaviour, and the duty cycles imposed by the finished system.
Terma’s battery cell tester range includes the TBCT12 for lower-current development and the TBCT300 for cells requiring currents up to 300A. The company specifies regenerative end-to-end efficiency of up to 95%, returning energy during discharge rather than dissipating it entirely as heat, while an open API and integrated software support automated electrical and thermal test workflows.
The power-conversion architecture uses silicon carbide in the active front end and gallium nitride on the DC output. Terma also provides self-calibration, direct-current internal resistance measurement, electrochemical impedance spectroscopy on selected configurations, and a snapshot function capable of capturing fast transients with timing down to 10 microseconds.
Those functions reduce the need to assemble a test bench from separate instruments, particularly when development teams need to repeat complex profiles across many cells. Regenerative operation also reduces the thermal load created by repeated cycling, which becomes increasingly important as test currents rise and laboratories run several channels in parallel.
Danube Cell brings the manufacturing and cell-development side of the partnership. Closer coupling between design changes and a programmable test environment should allow variations in chemistry, electrode structure, mechanical construction, or process conditions to be checked against the intended application profile rather than a generic laboratory cycle.
Aerospace and defence add another layer of requirements because high energy density alone does not determine whether a cell is suitable. Vibration, storage, temperature change, high-rate discharge, irregular mission profiles, and failure behaviour can be more important than a laboratory maximum, while pack electronics, sensing, protection, balancing, and system-level power management sit between the cell and the platform that ultimately uses it.
Battery validation is therefore becoming a more complex electronics task as current levels increase and development teams demand more information from each cycle. High-speed measurements and impedance data can expose behaviour that conventional capacity figures miss, while software interfaces allow results to feed automated engineering, quality, and traceability systems instead of remaining in standalone test equipment.
The companies are also positioning the collaboration around European engineering and production. That gives customers another route to work with regional suppliers during development, although it does not by itself create a sovereign battery supply chain or remove dependence on upstream materials, specialist equipment, and international component sources.
The agreement remains an MoU, and neither company has disclosed customer programmes, production volumes, contract values, or a timetable for commercial deliveries. Its value will depend on the projects that follow and whether the combined development and test process can reduce iteration time while preserving the application-specific evidence required for demanding electronics programmes.
Terma’s test platform is already commercially defined across lower-current and 300A configurations; the open question is how effectively that equipment can be integrated with Danube Cell’s design and manufacturing loop. A closer relationship between cell development and validation can remove some hand-offs, but the result will only be useful if it produces repeatable data and cells that survive the subsequent qualification work demanded by aerospace, defence, and industrial customers.
