The secondary use (second-life) of electric vehicle (EV) batteries is an important environmental and economic issue. This article analyzes the advantages and disadvantages of reusing EV batteries in static energy storage systems after vehicles on a scientific basis. The relevance of the topic is indicated in the introduction, and the development of the field is considered through a literature review. The scientific justification covers the State of Health (SoH), degradation mechanisms, and secondary use options in detail. The comparative analysis compares the economic, environmental, and technical indicators of secondary use and recycling methods. Graphs and diagrams visualize the battery capacity change, greenhouse gas (GHG) savings, and supply potential. As a scientific novelty, it is emphasized that secondary use can fully satisfy the static storage need of 281 GWh by 2050 and save 55.8 MtCO₂eq GHG. The article provides suggestions for effective management of EM batteries in sustainable development.

Electric vehicle batteries, secondary use, second-life, advantages, disadvantages, static energy storage, degradation, recycling, environmental impact.

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