Schaeffler and CATL sign MoU to co-develop battery management and power electronics for Europe

Schaeffler and Contemporary Amperex Technology Co. Limited (CATL) have signed a memorandum of understanding to jointly develop battery management systems and integrated power electronics for the European electric vehicle market, the companies announced on 20 August 2026. The agreement is not a vague declaration of intent: it builds on a customer project that has already been secured, though neither party named the automaker involved.

Two technology strands, one industrial logic

The partnership focuses on two areas. First, battery management systems (BMS) tailored to European manufacturers' requirements. Schaeffler brings the full BMS value chain, hardware and software development, system integration, functional safety, testing, validation and localised series production in Europe. CATL contributes cell production technology, battery system design and core battery algorithms. Second, so-called "X-in-1" integrated PowerBox (IPB) solutions that tightly couple high-voltage electronics with electromechanical systems. The term "X-in-1" refers to the integration of multiple functions, typically inverter, on-board charger, DC-DC converter and power distribution, into a single housing, reducing weight, volume and wiring complexity.

This is not the first time a European tier-one supplier has tied up with a Chinese battery leader. But the specificity matters. Schaeffler is not simply reselling CATL cells; it is embedding its own BMS hardware and software around CATL's cell chemistry and system architecture. For CATL, the deal offers a route into European series production that navigates regulatory homologation and local content expectations without building everything from scratch. For Schaeffler, it secures access to the world's largest battery maker's technology roadmap at a moment when European OEMs are scrambling to differentiate their electric platforms.

Why Europe, why now

The press release frames the collaboration as a response to "reshaping regional supply chains" and growing demand for "highly integrated e-mobility solutions that meet the highest standards of performance, safety and efficiency." That is corporate language for a concrete shift: the European Union's Battery Regulation, which entered into force in 2023 and phases in requirements on carbon footprint, recycled content, due diligence and digital battery passports, has made localised development and production a strategic necessity rather than a preference. Non-European cell makers that want to supply European volume programmes increasingly need a European partner with homologation experience and a factory footprint.

Schaeffler's Herzogenaurach headquarters and its network of European R&D and production sites, the company employs around 110,000 people across 250 locations in 55 countries, give it that footprint. CATL, for its part, has been building a European presence since its Erfurt plant in Germany started construction in 2019 and its Debrecen plant in Hungary was announced in 2022. But a factory is not a full value chain. The MoU plugs CATL into Schaeffler's existing European validation, functional safety and series production infrastructure.

The China-Europe technology flow runs both ways

Thomas Stierle, CEO E-Mobility at Schaeffler, was explicit about the dual market logic: "Through our partnership with CATL, we aim to build a competitive product portfolio for the European market and beyond, delivering long-term value to global OEMs and Chinese automakers expanding overseas." The phrase "Chinese automakers expanding overseas" is the tell. BYD, Nio, XPeng, Geely and others are launching vehicles in Europe, and they need suppliers who understand both Chinese battery architectures and European type-approval processes. Schaeffler, with its established European operations and existing relationships with Chinese OEMs in China, sits at that intersection.

Bruce Li, Executive President of Quality Systems at CATL, mirrored the framing: "With a strong presence across Europe and extensive operational experience, we have gained deep insight into local customer needs and regional industry standards." He added that the cooperation will "further explore applications of cutting-edge technologies including cloud computing and artificial intelligence in battery management scenarios." That is a significant signal. Cloud-based BMS, where cell data is aggregated, analysed and used for predictive maintenance, state-of-health estimation and over-the-air updates, is an area where Chinese companies have moved faster than European incumbents. CATL's mention of AI suggests it intends to bring that capability into the joint portfolio.

What the MoU does not say

Several material details are absent. No financial terms were disclosed. No timeline for series production was given. The "secured customer project" remains unnamed, which makes it impossible to assess whether this is a niche platform or a high-volume programme. The intellectual property ownership model for co-developed BMS algorithms and IPB architectures is not described. And the governance structure, who decides on specification changes, who bears cost overruns, how disputes are resolved, is left for later negotiation. In supplier-OEM relationships, those details often determine whether a MoU becomes a long-term contract or a case study in a strategy presentation.

There is also the question of competition. Schaeffler's e-mobility division competes with other tier-one suppliers, ZF, Bosch, Valeo, Vitesco, that have their own BMS and power electronics roadmaps. Some of those competitors have their own Chinese partnerships. CATL, meanwhile, supplies cells to almost every major European OEM directly or through joint ventures. The MoU could create channel conflict if Schaeffler-CATL BMS/IPB packages are offered to OEMs that already source cells from CATL but prefer their own BMS architecture. How the two companies manage that tension will shape the partnership's durability.

Industrial policy context

The announcement lands at a sensitive moment for European industrial policy. The European Commission has been pushing for a "European battery value chain" through the European Battery Alliance and Important Projects of Common European Interest (IPCEI) funding rounds. Those initiatives have channelled billions of euros into European cell production, cathode active material, recycling and equipment. A German tier-one supplier formalising a deep technology partnership with a Chinese state-linked champion, CATL is partly owned by Chinese municipal and provincial entities, will be read in Brussels as both a pragmatic commercial decision and a signal that European industry sees Chinese technology as indispensable to its electrification timeline.

That reading is not without friction. The EU's anti-subsidy investigation into Chinese battery electric vehicles, which resulted in provisional duties in July 2024 and definitive duties later that year, was explicitly aimed at addressing what the Commission deemed unfair advantages from state support. CATL was not a direct target of that investigation, it is a cell supplier, not a vehicle exporter, but the political environment remains charged. Any partnership that deepens Chinese technology integration into European platforms will be scrutinised for strategic dependency risks, particularly on BMS algorithms that control safety-critical functions.

The competitive landscape

To understand where this fits, consider the alternatives. Volkswagen's PowerCo joint venture with Umicore and its partnership with QuantumScape on solid-state batteries represent a vertical integration bet. Stellantis has ACC (with TotalEnergies and Mercedes-Benz) and a separate joint venture with CATL for LFP cells in Spain. Mercedes-Benz develops its own BMS in-house but sources cells from CATL, Farasis and others. BMW's Gen6 platform uses a proprietary BMS with cells from CATL's Erfurt plant and EVE Energy. In each case, the BMS architecture is either fully proprietary or developed with a specialist supplier, not co-developed with the cell maker at this depth.

Schaeffler-CATL is betting that the complexity of integrating cell chemistry, thermal management, high-voltage electronics and software into a single validated system will push OEMs toward pre-integrated "powerbox + BMS" modules from a trusted tier-one. If that bet pays off, the partnership could become a template for other supplier-cell maker pairings. If OEMs instead insist on owning the BMS architecture to differentiate their vehicle software stacks, the addressable market shrinks to smaller manufacturers and Chinese brands entering Europe without legacy electronics organisations.

What happens next

The immediate next step is the transition from MoU to development contracts with defined milestones, deliverables and IP clauses. The unnamed secured customer project will likely serve as the pilot programme, with series production timing dictating the pace. Watch for a joint technical demonstration at the IAA Mobility show in Munich in September 2026, both companies have used that venue for major announcements in the past. Beyond that, the key indicator will be whether additional European OEMs sign on for the co-developed BMS/IPB package, and whether CATL licenses its cloud-based battery analytics platform to Schaeffler for integration into the European aftermarket and fleet management ecosystem. That would be the clearest signal that the partnership has moved from project-specific to strategic.