Stellantis Unveils IBIS: A Smarter, Smaller EV Battery That Boosts Range and Charging

A Compact Breakthrough for EVs

Stellantis claims it has developed a new way to make EVs more efficient, practical, and powerful without resorting to bulkier battery packs. The innovation is called the Intelligent Battery Integrated System (IBIS), and it combines components that usually sit outside the battery—like the inverter and onboard charger—into a single, compact unit.

This integrated design trims weight, saves space, improves charging times, and delivers more range and power compared to conventional batteries. The goal: give everyday EVs the performance edge they need without sacrificing affordability or practicality.

What Makes IBIS Different

The first IBIS prototype has already been fitted to a Peugeot E-3008 crossover, which rides on Stellantis’s STLA Medium platform—the same one that underpins the Jeep Compass. Unlike traditional systems, IBIS embeds both the inverter and charger functions inside the battery, regardless of chemistry.

That means a nickel manganese cobalt (NMC) pack could power a family SUV, while a lithium iron phosphate (LFP) pack could easily slot into a delivery van or fleet vehicle. This flexibility is key for Stellantis, which manages a wide range of global brands from Peugeot and Citroën to Jeep, Chrysler, and Ram.

Beyond Storage: Smarter Energy Use

Developed with battery specialist Saft, IBIS isn’t just about storing electricity. The system supports both AC and DC charging and even enables vehicle-to-grid (V2G) capability. That means the same unit that drives the car’s motors can also return energy to the grid or power the vehicle’s 12-volt and auxiliary systems—without additional hardware.

This approach reduces complexity, lowers costs, and opens the door to smarter energy management at scale, especially as EV adoption grows worldwide.

Efficiency, Power, and Practical Gains

Stellantis says IBIS boosts energy efficiency by up to 10% and increases output by 15% compared to a conventional pack of the same size. In practice, that translates to 230 horsepower (172 kW) versus 201 horsepower (150 kW).

The compact integration also cuts about 88 pounds (40 kg) of weight and frees up 0.6 cubic feet (17 liters) of cabin or cargo space—precious real estate in any vehicle. Charging performance improves as well: on a 7 kW AC home charger, a full recharge takes about six hours instead of seven.

These gains may seem incremental, but together they represent a step-change in how EV batteries can be designed to deliver more while weighing less.

From Lab to Real-World Roads

Stellantis says the next step is to validate IBIS through real-world testing. Engineers will evaluate durability, performance, and safety in everyday conditions before the system reaches production readiness.

If all goes to plan, IBIS could debut in Stellantis production EVs by the end of the decade. Thanks to its modular nature, it could scale across a wide spectrum of vehicles, from compact city cars to large SUVs and work trucks.

Why It Matters

The biggest challenges for EV adoption remain range, charging speed, and cost. By integrating key electronics into the battery itself, Stellantis is showing that meaningful improvements don’t always require bigger packs or more expensive materials.

If successful, IBIS could bring EVs closer to matching the everyday convenience of gas-powered cars—helping to make electrified mobility not just cleaner, but smarter and more practical.

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