Rosti Group’s Partnership with Global Energy Storage Leader in E-Mobility Solutions for Large Vehicles

In 2017, Rosti Group started a strategic partnership with a German energy storage company focused on advancing e-mobility solutions for large vehicles such as buses, coaches, and heavy goods vehicles (HGVs).

Recognizing the customer’s ambition to revolutionize energy storage within these markets, Rosti supported the customer as their global plastic injection molding partner, assisting with product development and bringing the product to market.

This collaboration has since expanded across continents, with Rosti’s North American division now playing an essential role in supporting continued innovation and production.

Developing Battery Storage for E-Mobility

The customer’s initial focus was on developing a high-performance, multi-cell carrier system that met strict industry standards, including temperature resilience, vibration resistance, and fire retardancy. This product required not only durable and reliable materials but also the precise expertise to optimize the design for manufacturability.

We worked closely with the customer’s design team to refine the product design, ensuring it was both functional and scalable for high-volume production. Material selection was also a key part of this process, involving a resin specialist and close collaboration with the customer to find materials that met all regulatory and operational requirements.

Experienced Plastic Injection Molding Partner

Rosti invested significant time and resources in product design reviews and improvements to make sure the multi-cell carrier system was both innovative and ready for scalable production.

As demand for the energy storage systems grew worldwide, the partnership needed to scale. Rosti deployed a Production Transfer team to ensure a seamless transfer of manufacturing processes to North America. Duplicate tools were produced to allow for consistent production across continents with the same high-quality standards.

The success of the partnership has propelled the customer to a leading position, supplying major heavy goods vehicle manufacturers around the world. Expanding into North American production has increased capacity and provided a responsive, local supply chain that strengthens customer support across two major markets.

Building on the success of the multi-cell carrier system, Rosti is now collaborating with the customer on new product development—specifically, a next-generation battery cell carrier system for the automotive market. This ongoing work highlights Rosti’s role as a long-term partner in the e-mobility sector, supporting the customer’s evolving technology and growth strategies.