Karmactive Team
System (IBIS) is now being tested in a Peugeot e-3008, showing promising improvements that could make electric cars more appealing to everyday drivers.
What makes this battery different is how it combines three separate parts – battery, inverter, and charger – into one unit. Today’s electric vehicles use these as separate components, but IBIS puts them all together.
“This project reflects our belief that simplification is innovation,” said Ned Curic, Chief Engineering and Technology Officer at Stellantis. “By rethinking the electric powertrain architecture, we are making it lighter, more efficient, and more cost-effective.”
The system makes vehicles about 40 kg (88 pounds) lighter and frees up 17 liters of space. These aren’t just numbers on paper – testing shows a 10% boost in energy efficiency while driving and 15% more power (172 kW compared to the standard 150 kW) using the same size battery.
For most drivers, faster charging will be the biggest benefit. Tests show charging times cut by about 15%, reducing a typical 7-hour home charge to around 6 hours on a 7 kW charger.
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The technology works by building the functions of the inverter and charger directly into the battery using about 200 transistors for electronic control. In regular electric vehicles, separate components convert power between the different forms needed for driving and charging. IBIS eliminates these extra parts.
Stellantis developed IBIS with several partners, including Saft (owned by TotalEnergies), along with E2-CAD, Sherpa Engineering, and French research institutions CNRS, Université Paris-Saclay, and Institut Lafayette.
“The IBIS project is a powerful testament to Saft’s innovation leadership,” said Hervé Amossé from Saft. “We’re unlocking a new era of intelligent, flexible, and sustainable energy solutions.”
The technology could also work in trains, planes, boats, and data centers, potentially changing how we store and use energy across many industries.
The road to production vehicles is still ongoing. Phase 2 testing began in June 2025 with support from the French Government. If results continue to be positive, Stellantis plans to put this technology in production vehicles by 2030.
Stellantis isn’t alone in this approach. Porsche is also working on a similar technology called a “modular multi-level inverter” that combines multiple electrical components.
For consumers, IBIS could eventually mean electric vehicles that are more efficient, powerful, and practical for daily use. By addressing concerns about charging time and driving range, these innovations might help more people switch from gasoline to electric cars.
As testing continues on real roads, the auto industry will be watching to see if this technology delivers on its early promise and helps electric vehicles appeal to more mainstream car buyers.
