VoltR turns used lithium cells back into production

Summary

VoltR has secured €16 million in equity and €6 million in grants for industrial expansion.
The company plans to double its Verrières-en-Anjou factory footprint and increase production capacity sixfold within two years.
More than 20,000 remanufactured batteries have already been placed on the market, according to the company.

VoltR has secured €22 million to expand lithium battery remanufacturing in France, using diagnostic testing to recover cells that still have useful life rather than sending an entire battery directly into material recycling.

The financing combines €16 million in equity from the SPI 2 industrial fund, managed by Bpifrance on behalf of the French state, and Decathlon Pulse with €6 million in grants through the Première Usine programme. VoltR plans to double the footprint of its factory in Verrières-en-Anjou and increase production capacity sixfold over the next two years.

The company says more than 20,000 remanufactured batteries have already been placed on the market during the past four years. Its next phase therefore centres on industrial throughput, repeatability and securing enough used batteries to feed a much larger manufacturing operation rather than proving the basic concept from scratch.

VoltR collects end-of-first-life batteries, assesses individual cells and uses suitable units in newly manufactured battery systems. A cell that no longer meets the demands of its original application may still retain enough capacity and performance for another product with a different duty cycle.

Remanufacturing sits before recycling

The process differs from conventional recycling because the cell remains an industrial component rather than being broken down immediately to recover raw material. Recycling is still required once a cell can no longer perform usefully, but remanufacturing attempts to preserve more of the value already embedded in it before reaching that stage.

Lithium batteries carry substantial material, energy and manufacturing inputs before they enter their first application. Extending the useful life of suitable cells can reduce the need for new production in certain markets, provided recovered components can be diagnosed reliably and assembled into packs that satisfy safety and performance requirements.

Diagnostics consequently sit at the centre of VoltR’s industrial model. Cells in a retired battery have not necessarily aged at the same rate because temperature, charging behaviour, manufacturing variation and use patterns can leave them with different remaining capacities and internal conditions.

Scaling therefore involves considerably more than collecting used batteries. Cells have to be measured, classified and matched to appropriate applications, after which new packs need to be engineered around their residual performance. Processes that work on thousands of products also have to remain economical when volumes increase several times over.

France is funding the manufacturing step

Public capital forms a material part of the expansion. SPI 2 operates under France 2030 and supports industrial projects, while Première Usine helps companies move emerging technologies into larger manufacturing footprints.

Decathlon Pulse brings a different form of industrial exposure as the investment and innovation arm of a company selling products across categories where rechargeable batteries are increasingly common. VoltR has not presented the investment as a dedicated supply agreement, so any commercial relationship beyond the financing should not be assumed.

The factory expansion is expected to be accompanied by around 40 additional jobs and a doubling of the workforce. The numbers are modest compared with new-cell gigafactory projects, although VoltR is pursuing a different layer of the market by extracting further value from batteries already circulating through Europe.

That gives remanufacturing a place in the broader debate about European battery resilience. Policy has concentrated heavily on domestic cell factories, critical materials and recycling, while the growing installed base of batteries also creates an expanding stream of components leaving their first application.

How much of that stream can support another use will depend on collection economics, battery design, chemistry, cell format and remaining performance. Changes in pack construction can also make batteries easier or harder to disassemble, adding another variable outside a remanufacturer’s direct control.

VoltR’s sixfold capacity increase will test whether the model can absorb more varied feedstock while preserving predictable performance and competitive costs. If it can, remanufacturing adds another industrial stage between first use and material recovery, keeping part of the value already invested in cells inside the European battery chain for longer.