CellPassport: Cloud-based EIS battery diagnostic system for Predictive Battery cell state and Smart Energy management Integration DOI: 10.13140/RG.2.2.25283.31525 Tarek Mahmoud Samy Ibrahim Tarekm@ieee.org Keywords: CellPassport; Predictive Maintenance; Smart EMS; Dynamic Pricing; Real-Time EIS; State of Health (SoH); State of X (SoX); Battery Cells; Cell Reuse; Second-Life Applications; Cloud Analytics; Digital Twin; Failure Prediction Introduction The CellPassport concept is closely aligned with the European Union’s Battery 2030+ Roadmap [1], which advocates for digital twins, cell-level sensing, and intelligent data-driven maintenance strategies to support a circular battery value chain. Battery health and reliability are critical to applications like EVs, residential, and utility-scale energy storage systems (BESS). The CellPassport solution integrates real-time, non-invasive Electrochemical Impedance Spectroscopy (EIS) [2] with cloud analytics ...