Connect existing BMS data
CellPassport starts from signals already measured by battery systems: voltage, current, temperature, cycle history, and operating events.
Cloud-based per-cell diagnostics engine
The digital passport for every battery cell.
CellPassport transforms existing BMS data into per-cell diagnostics, impedance-informed health indicators, and cloud digital twins — enabling predictive maintenance, smarter energy management, and second-life battery decisions.
No external EIS hardware
Passive / online EIS
Per-cell digital twin
Battery Passport ready
Why now
Battery passports need live condition data — not only static records.
The EU Battery Passport creates a new requirement for traceable, machine-readable battery information. But battery condition changes continuously during use. CellPassport is designed to close the gap between compliance records and real operational health.
18 Feb 2027
EU Battery Passport milestone
EV batteries, LMT batteries, and industrial batteries above 2 kWh will require an electronic battery passport under EU Battery Regulation rules.
Technology
From operational BMS signals to impedance-aware battery intelligence.
CellPassport uses a passive diagnostics approach: voltage, current, temperature, and operating history are processed in the cloud to create cell-level indicators and lifecycle records.
| Pillar | What it means | Why it matters |
|---|---|---|
| Passive / online EIS | Uses existing BMS voltage and current data to derive impedance-related diagnostic indicators. | Avoids additional EIS hardware and avoids external signal injection. |
| FFT-based analysis | Converts operational time-domain signals into frequency-domain diagnostic features. | Enables scalable impedance-informed monitoring during real battery operation. |
| Per-cell digital twin | Creates a cloud model and diagnostic history for each battery cell. | Supports weakest-cell detection, lifecycle tracking, and individualized battery passports. |
| SoX analytics | Tracks SoH, SoC, temperature-related behavior, degradation signatures, and failure-risk indicators. | Helps OEMs, fleet operators, and BESS owners make better operational and end-of-life decisions. |
Workflow
How CellPassport works.
A scalable cloud workflow for converting raw battery telemetry into cell-level diagnostics and lifecycle value.
Extract impedance-related features
FFT-based processing identifies diagnostic signatures linked to internal resistance, degradation, and electrochemical behavior.
Create a per-cell cloud twin
Each cell receives an evolving digital record with health indicators, condition history, and data suitable for passport reporting.
Enable lifecycle decisions
The platform supports predictive maintenance, smart charge scheduling, second-life grading, recycling decisions, and fleet-level battery intelligence.
Use cases
Designed for mobile and stationary battery systems.
CellPassport serves stakeholders who need reliable cell-level insight across first life, second life, and end-of-life decisions.
Electric vehicles
Improve SoH visibility, reduce range uncertainty, support warranty analytics, and preserve lifecycle history for second-life pathways.
Utility-scale BESS
Enable predictive maintenance, early cell fault detection, smarter dispatch, and condition-aware energy management.
Second life & recycling
Grade cells using real operating history and impedance-informed health indicators to improve reuse, repurposing, and recycling decisions.
Benefits
Battery intelligence beyond compliance.
A battery passport should not only document a battery. It should help operators extend life, reduce risk, and preserve value.
For OEMs
- ✓Field diagnostics and warranty insight
- ✓Per-cell lifecycle records
- ✓Battery passport data infrastructure
For BESS operators
- ✓Predictive maintenance
- ✓Weakest-cell visibility
- ✓Condition-aware energy management
For second-life operators
- ✓Cell grading and ranking
- ✓Remaining-useful-life support
- ✓Better repurposing decisions
For regulators & ecosystems
- ✓Dynamic condition indicators
- ✓Traceable lifecycle data
- ✓Circular-economy support
Research foundation
Built on AAU Energy research in passive EIS and battery-passport diagnostics.
CellPassport is connected to Aalborg University research on cloud-based per-cell diagnostics, online EIS, material–diagnostics interactions, and battery passport data models.
Team
Founding and scientific team.
The CellPassport team combines battery diagnostics, online EIS, power electronics, microgrids, energy management, and applied research commercialization.
Dr. Tarek Mahmoud Samy Mostafa Ibrahim
Founder / Principal Investigator
Battery diagnostics, passive EIS, digital twin architecture, and cloud-based CellPassport concept development.
Prof. Tamas Kerekes
Founder / Co-PI
Power electronics, energy systems, and research leadership for CellPassport-related AAU activities.
Dr. Muhammad Usman Tahir
Founder / Battery diagnostics & online EIS
Research contributor in battery diagnostics, online EIS, state estimation, and battery passport frameworks.
Dr. Abderezak Lashab
Founder / Scientific advisor
Assistant Professor at AAU Energy with expertise across microgrids, photovoltaics, battery-related energy systems, predictive control, and energy management.
Let’s build the battery passport layer
Ready to turn battery data into lifecycle intelligence?
Contact CellPassport to discuss pilots for EV packs, BESS assets, battery passport reporting, passive EIS diagnostics, and second-life battery grading.
Website
CellPassport.eu
Email
contact@cellpassport.eu