BMW Begins Series Production of Gen6 High-Voltage Batteries in Shenyang, China — The Third Site After Two in Europe, with the U.S. and Mexico Starting Within Months

On October 15, 2026, the BMW Group announced that it had begun series production of sixth-generation (Gen6) high-voltage batteries in Shenyang, China. Following Debrecen in Hungary and Irlbach-Straßkirchen in Germany, it is the third site in the global Gen6 production network.

Batteries produced in Shenyang will go into the upcoming next-generation "Neue Klasse" EVs built in China.

A five-site production network

BMW produces Gen6 batteries close to each vehicle plant. The aim is to shorten transport distances, stabilize supply and make the production network more resilient. Production, quality and safety standards are the same at every site, and each site brings in regional manufacturing and supplier know-how. Once the U.S. and Mexico are running, the network will have five sites across Europe, China and North America.

What changes with Gen6

The other pillar is Energy Master, a central control unit developed in-house by BMW. Mounted directly on top of the battery, it combines the main power supply and battery management functions in one unit.

Assembly process and quality assurance

BMW described the Gen6 assembly process as follows.

1. Cells are inspected and combined with cooling units into cell clusters 2. After laser cleaning, the cell clusters and cell contacting system are precision-welded 3. A dedicated foaming process bonds the components into a single structure 4. The housing is closed, sealed and riveted 5. Energy Master is fitted, and every unit goes through final inspection

Laser welds are monitored in real time by inline inspection, and digital twins, data analytics and AI-based inspection are used to detect anomalies early and make them traceable. Because the cell clusters are joined into one structure by welding and foam bonding, quality assurance centers on in-process data monitoring.

What it means for procurement and business planning teams

• Battery packs are assembled near vehicle plants: with Gen6, BMW applies the same policy of locating pack assembly where vehicles are built across Europe, China and North America. Suppliers of cells and materials will more often be asked for region-by-region supply setups
• What was not disclosed: the announcement does not give the investment amount, production capacity or cell sources for the Shenyang site. Who supplies cells in China still needs to be confirmed
• Process monitoring requirements: processes built on inline inspection and traceability tend to require lot-level data from material suppliers too. As recalls over battery thermal propagation risk show, identifying a root cause can take time, so traceable processes are valuable

Referenced Fact Cards