In the scope of this article, we picture the utilization of PBMs as a cost-effective and straightforward method for conducting quality control of the electrochemical properties of electrodes produced from recycled materials. Quality control is particularly important in this landscape, given that soon, battery manufacturers will be required to comply with mandatory minimum levels of recycled metallic elements in their products, as stipulated by the European Union [109]. To foster a circular and sustainable battery value chain, the inclusion of waste from battery manufacturing processes into the production of new batteries will also be considered as part of the recycled content. In the ideal case, newly manufactured batteries would be made in their entirety from recycled batteries, or battery scrap materials. Still, given the state-of-the-art, it would be easier to comply with the regulation by combining both recycled and pristine electrode materials into a single hybrid electrode formulation.