D7.4 Test Report for 2nd life-Testing

This deliverable presents the results of second-life testing conducted on the Marbel battery module, specifically evaluating its feasibility for reuse in small mobility applications. Building on prior guidelines for second-life battery use, this study focuses on testing and analyzing the Marbel module's performance in electric scooters, e-bikes, and motorcycles. The assessment began with defining the energy demands and usage profiles of these vehicles, followed by laboratory tests to evaluate the module’s suitability. Since the tested module had not undergone prior aging, a battery lifetime model was developed to estimate its State of Health (SOH) over its first and second life. Test results indicate that the Marbel module performs well for e-bikes and scooters, where the required power does not exceed 500W. However, it is unsuitable for motorcycles, as its 2.5 kW power limit is insufficient for speeds above 50 km/h, where power demands exceed 12.5 kW. Despite this limitation, the Marbel module's high energy density suggests it could provide extended autonomy in low-speed applications. The battery lifetime model predicts up to 1,900 cycles at 80% SOH and 3,200 cycles at 60% SOH, demonstrating its long-term viability in second-life applications. Overall, the Marbel battery module shows strong potential for reuse in urban e-bikes and scooters, supporting sustainability goals while maintaining reliable performance in second-life applications.