A couple of days ago, Tata Technologies unveiled WATTSync, a digital passport for batteries that promises to change the way we look at sustainability and trust in mobility. Built as a secure, cloud-based platform, WATTSync follows a simple idea: when you can trace it, you can trust it.
Even before its official launch, WATTSync has already caught the eye of automakers and battery makers. Speaking to Mobility Outlook, Marc Manns, Vehicle Line Director - EE at Tata Technologies, said, the company has run several proof-of-concepts (POCs) with both groups, and more work is already in the pipeline. “With RFIs and RFQs in motion, the first formal partnership is expected to begin in the coming weeks,” he said.
Who exactly will buy it? That depends on the regulation. From February 2027, every battery above 2 kWh sold into the EU must carry full traceability. The responsibility lies with the company introducing the battery to the market. In some cases, that will be the vehicle OEMs; in others, it will be the battery pack manufacturers. Either way, demand for such a solution is inevitable, he mentioned.
The Engine Behind It
Designed as software-as-a-service, WATTSync connects seamlessly with automakers’ backend systems through APIs. This means it can pull in everything from manufacturing details to in-use performance data, making compliance with upcoming global regulations far easier.
Marc Manns
Whether the information comes from a spreadsheet uploaded by a supplier or directly from a factory’s production system, WATTSync brings it all together in one secure place. The result is complete traceability across a battery’s lifecycle — giving manufacturers the confidence of compliance and customers the assurance of sustainability.
Turning Data Into Value
For automakers, WATTSync is more than just a compliance tool — it can also unlock new revenue streams. Tata Technologies has designed the system as software-as-a-service, giving manufacturers the flexibility to use it as-is or customise it for their own needs. With added features like AI-powered prognostics, the platform can even be monetised through subscription models, offering drivers and fleet owners advanced insights and services.
But the real power of WATTSync lies in what it can predict. By pulling live data from a vehicle’s battery management system, the platform can spot early signs of trouble — such as a potential thermal event — before it happens. If an issue is detected, the system immediately alerts the driver and can also notify the dealer. Depending on the severity, the driver may be advised to stop driving or head straight to a service centre. Depending on how the OEM chooses to use it, Tata Technologies can still step in to provide extra assurance, but the real aim is a self-sufficient platform that ensures drivers and dealers get critical prompts in time. This two-way communication between user and dealer ensures faster response, safer vehicles, and fewer unpleasant surprises on the road, Manns explained.
What Makes WATTSync Different
At its core, WATTSync is about making every battery traceable—from the first stage of mining to its use in vehicles, and finally to repurposing or recycling. But Tata Technologies didn’t stop at compliance. The team has added powerful layers of intelligence that make the system stand out.
One of the biggest differentiators is “AI-powered prognostics. After running proof-of-concepts with both Asian and UK manufacturers, the platform can now predict potential issues in vehicle batteries and even e-powertrains before they occur. Alongside this, Tata Technologies is developing an AI co-pilot, a chatbot that turns raw vehicle data into meaningful advice. Imagine being told why your range is dropping—perhaps because of harsh driving—before it becomes a problem,” he said.
Behind this innovation is a global team, spread across India, China, and the UK, bringing together not only AI and software expertise but also deep knowledge in powertrains, cybersecurity, and connected vehicles. This unique mix, backed by the trust of the Tata Group and years of collaboration with global OEMs, is what gives WATTSync its edge, he noted.
Standards, Safety, Value Beyond Compliance
Battery passports may be new, but the rules are already clear. The EU has mandated 93 parameters to be tracked—from static details like where a cell was made, to dynamic data such as charge, voltage, and health. Every step must be traceable until the battery’s end of life, and WATTSync ensures exactly that.
Of course, handling so much sensitive data makes cybersecurity critical. Here, Tata Technologies draws on its deep experience. A global team—working at chip, hardware, system, and cloud levels—runs penetration testing labs in the UK and India to stress-test the system. The solution is built to be fully compliant with international cyber regulations, ensuring OEMs and customers can trust their data is safe.
But traceability is only the beginning. Because compliance is mandatory, every OEM has to invest in it. Tata Technologies turns that cost into value by adding AI-driven services like prognostics, which can predict failures and prevent expensive downtime. In other words, WATTSync doesn’t just tick boxes—it delivers real-world savings and reliability that go well beyond regulation, elaborated Manns.
From Battery Passport To Vehicle Passport
Looking ahead, Tata Technologies sees the passport idea going far beyond batteries. With sustainability rules tightening, the concept could soon expand into a full Vehicle Passport. “Imagine a digital record that doesn’t just track the battery, but also the steering, braking, and other critical systems. Paired with AI-driven prognostics, this would allow vehicles to warn drivers or dealers instantly of possible failures — keeping cars safer, OEMs more competitive, and customers more confident,” he concluded.
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