Date:    2nd June 2024 Level:    Master Thesis in Product- and Process Development, Advanced     level, 30 credits                                                                                  Institution:   School of Innovation, Design and Engineering, Mälardalens University Authors:   Farin Hasan & Soumik Karim Title:    Role of digitalization and digital capabilities to implement second-life business models for electric vehicle batteries Keywords:   Second-life EV batteries, Digitalization in circular economy, Industry 4.0 technologies, EV battery life cycle, Circular economy models, Battery recycling/repurposing Purpose:   The aim of this thesis study is to develop and evaluate a digitalization framework with the goal of improving the second life management of EV batteries.  Research questions:  “What type of Industry 4.0 technologies and digital capabilities are key for the implementation of second-life business models for EV batteries and how do they support ecosystem actors?”  , “How should ecosystem actors prepare and integrate these     technologies and capabilities to implement second-life business models for EV batteries? Methodology:   The study was conducted using an abductive research approach,   employing qualitative methods. The theoretical framework was developed through a systematic literature review of existing literature within the research scope. Data collection involved an  extensive literature review and archival study. Thematic analysis was applied to the data to identify patterns and themes, which were further analyzed to construct a framework.                                                     Conclusion:   The study concludes that integrating industry 4.0 technologies enhances the management and repurposing of EV batteries for second-life applications. These technologies enable effective monitoring, predictive maintenance, and secure data management, which supports ecosystem actors in developing sustainable and economically viable second-life business models.