top of page
Writer's pictureBaba Mulani

Technology Readiness Level (TRL) in Li-ion batteries

Updated: Apr 4

References: Frith, J.T., Lacey, M.J. & Ulissi, U. A non-academic perspective on the future of lithium-based batteries. Nat Commun 14, 420 (2023). | Greenwood, M., Wrogemann, J.M., Schmuch, R., Jang, H., Winter, M. and Leker, J., 2022. The Battery Component Readiness Level (BC-RL) framework: A technology-specific development framework. Journal of Power Sources Advances, 14, p.100089.

The path from a spark of creativity in lithium-ion technology to the smooth hum of a car gliding down the highway is as thrilling as it is complex. Central to this journey is the Technology Readiness Level (TRL), an evaluative measure originally conceived by NASA, now offering essential perspective on the development stage of li-ion battery technologies.


The TRL scale serves as a map for navigating the territories of tech development. It helps decision-makers gauge the readiness of a technology, pointing out the exciting prospects that lie ahead. With each step forward on this scale, we inch closer to the electric mobility revolution, all while juggling the risks & investments required to turn these pioneering concepts into road-worthy realities.


Academic researchers, often found tinkering at TRL 1–4, are the modern alchemists turning the elements into battery science gold. Their domain is one of groundbreaking ideas & proofs of concept, where the currency is less in dollars & more in novel insights. Yet, this is also a domain where risks loom large, as the gap between laboratory success & commercial viability can be vast. It is not just a matter of the complex science involved but also the looming specter of data misrepresentation & lack of reproducibility that can distort the path from lab to market.


Investments start modestly at these initial stages, but as we move up the TRL ladder, the stakes rise abruptly. By the time we reach the upper level of TRL 8 or 9, where battery cell production must scale to GWh and EV platforms & powertrains come into the picture, the financial commitments can skyrocket. Here, the rubber meets the road, quite literally, with vehicle Start-of-Production signaling the successful culmination of a technology's journey to the market.


But the road from a lab bench to the assembly line is messed with the remnants of over-promised & under-delivered technologies. Few companies serve as cautionary tales, embodying the harsh truth that not all that glitters in the lab will drive on the roads. Yet, it is within this complex adaptability of innovation, risk, and investment that the future of EVs is being shaped. The industry continues to push the boundaries, driven by the knowledge that the next breakthrough is always just around the corner.

86 views

Recent Posts

See All
© Copyright
bottom of page