Green Technology Metals Limited has announced that its pilot-scale testwork for converting spodumene concentrate into battery-grade lithium hydroxide has successfully met the stringent quality benchmarks required by end users. The company partnered with Korean battery materials expert EcoPro Innovation to conduct 12 months of rigorous trial work using a 600‐kilogram batch of concentrate from its Seymour lithium project in Ontario, Canada. The pilot tests confirmed that the batch produced a lithium hydroxide monohydrate product at a purity level of 56.5% LiOH.H2O, while achieving overall recovery rates of greater than 94% in large-scale process simulations, with laboratory studies showing lithium recovery exceeding 97% under optimized conditions. The extensive testwork covered all key process stages—from calcination through to sulfuric acid roasting, leaching, oxidation, neutralization, and impurity removal. In the laboratory setting, optimal calcination was demonstrated at temperatures around 1,000°C, with adjustments on the pilot plant bringing the operational temperature to 1,050°C to accommodate heat transfer limitations. The use of specific reagent additions, such as 1.2 to 1.4 equivalents of sulfuric acid relative to lithium content, also proved critical in attaining industry-leading recovery levels. Furthermore, the high calcium content in the concentrate was found to lower the necessary calcination temperature, suggesting potential cost efficiency in full-scale operations. The company’s rigorous process validation, conducted over multiple cycles of both laboratory and pilot testing, not only confirms the feasibility of producing battery-grade lithium hydroxide but also strengthens its strategy of integrating upstream mining and downstream chemical conversion. These results will inform the design criteria for the upcoming Pre-Feasibility Study and are aimed at securing additional offtake agreements ahead of moving towards a full-scale conversion facility in Thunder Bay. Looking ahead, Green Technology Metals plans to extend its piloting programs to its 100% owned Root Lithium project, pending improvements in market conditions. The latest test results are largely viewed with bullish sentiment. The successful production of battery-grade lithium hydroxide and the high recovery rates achieved in both lab and pilot settings validate the company’s integrated model and highlight significant potential in the North American electric vehicle market. However, some bearish concerns persist, including the risks associated with scaling up and the challenges of commercialization, as well as the capital demands required to transition from pilot work to full-scale production. Overall, these results provide a positive signal to market participants focused on the lithium supply chain and the burgeoning EV battery market.