On behalf of WG 4 and funded by the BMVI, a study was conducted by the Fraunhofer Institute for Systems and Innovation Research (ISI) together with the Fraunhofer Institute for Silicate Research (ISC) to quantify the battery recycling value network in Europe up to 2040. In addition to the WG 4 report based on this study, a short version of the study with a comprehensive presentation of the approach and results are now available here.