External Validation Before Model Complexity: Reproducibility Package for Recursive Lithium-Ion Battery RUL Forecasting

This record archives the reproducibility materials associated with the manuscript “External Validation Before Model Complexity: A Five-Gate Evaluation of Recursive Lithium-Ion Battery RUL Forecasts.” The archive contains: (1) the HUST post-confirmation v3 analysis package, including converted trajectories, gate metadata, protocol stress-test outputs, exploratory timing-utility sensitivity results, configuration files, execution logs, analysis code, and independent recomputation audits; and (2) the strengthened Journal of Energy Storage submission materials, including the manuscript, supplementary material, graphical abstract, highlights, cover letter, and revision documentation. The frozen HUST H1/H2 one-shot confirmation remains unchanged. The post-confirmation analyses evaluate five controlled protocol violations and exploratory utility contracts; they do not relabel, repair, or replace the original confirmatory result. HUST is classified as untouched confirmatory wrong-direction transfer, the XJTU Batch 4 cycle-190 result as amended conditional benefit, and the registered BIT primary comparison as non-estimable. Exact file identity is documented through accompanying SHA-256 checksum files. Original third-party battery datasets are cited in the manuscript and remain subject to their original licenses. Software and analysis scripts are released under the MIT License. Manuscript materials, documentation, figures, tables, and derived result summaries are released under CC BY 4.0. Third-party source datasets remain under their original licenses.