Battery Degradation Dataset - LGM50 Calendar Aging Study This repository contains an experimental dataset used in the research article: “Lithium-Ion Battery Degradation Modelling Using Universal Differential Equations: Development of a Cost-Effective Parameterisation Methodology, Kuzhiyil et al., Applied Energy, 2025, https://doi.org/10.1016/j.apenergy.2024.125221”. Please cite this article if you are using this dataset. Dataset Overview The dataset presents comprehensive calendar aging data collected from commercial LGM50 lithium-ion cells under controlled storage conditions: • Storage Temperatures: 0°C, 25°C, and 45°C• State of Charge (SOC): 13 distinct levels per temperature condition• Test Duration: Two-years per condition (on average). The dataset consists of MATLAB (.mat) files containing cell cycling results from Reference Performance Tests (RPTs) conducted throughout the aging study.