Lithium-ion batteries are seen as key elements to reduce global greenhouse gas emissions of transports and energy sectors. Nevertheless, efforts still have to be made to minimize their environmental impact. This article presents a pathway towards circular economy and more sustainable batteries, thanks to their reuse in mobile charging stations for electric vehicles. This work provides the characterization tests results and the modelization of second life batteries in a mobile charging station. Characterization test and electric models presented may be used as references to assess aged batteries performances after their first life. Detailed tests procedures and data results are shared in an open access datapaper.