Transformers for battery storage and charging technology

TRAMAG transformers support you on the way to E-Mobility

Power for your batteries

Charging technology and battery management have their own requirements for transformers, such as the conversion from DC to AC voltage or the high power consumption. We offer suitably designed winding goods for the desired voltage supply while ensuring high power quality.

Nearly 100 years of experience

DIN standard EN IEC 61558 compliant

Specialized production

Safe charging with winding materials from TRAMAG

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Charging technology that keeps its promises

High power quality and voltage supply

At the cutting edge of battery storage technology

Battery storage and charging technology is moving the world independent of the power grid. This demands compliance with complex and special requirements in the electrical system. Thanks to our storage chokes and isolation transformers, we are one of the leaders in the field of charging system infrastructure.

Storage chokes for charging stations

We are your contact for battery charging systems, battery charging stations, energy storage systems and energy storage systems. Our special transformers and chokes for energy storage and charging systems convince with high performance and decades of proven quality.

Standards in battery storage technology

Our products are certified according to:

  • Construction and testing standard DIN EN IEC 61558
  • UL/CSA
  • Electrical protection classes I and II
  • Insulation classes B, F and H
  • Protection classes according to IP
  • DIN ISO 9001:2015

100 years of experience for a volatile market

TRAMAG technology, proven for decades, is also used when it comes to winding goods for battery storage technology. All our solutions are designed to meet the complex requirements of the rapidly changing market for energy storage and charging systems.

Development expertise & production quality

Our expertise for your safety

Production safety

TRAMAG attaches great importance to the electrical safety of its products, which is guaranteed by the strictest compliance with all relevant standards.

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Our experience

For almost 100 years TRAMAG has been developing and manufacturing a wide range of transformers and chokes for various applications all over the world.

Our references

Quality standards

A certified QM system, special testing facilities, as well as the distinctive quality commitment of all TRAMAG employees ensure our high quality standards.

More about quality


The experience in development and production enables TRAMAG to respond flexibly and individually to special customer requirements, from one-off to series production.

More about flexibility


Always up to date in transformer technology

6. July 2022

Isolating transformers – TRAMAG products explained

Isolating transformers with protective separation TRAMAG products explained transform Isolating transformers provide safety where reliable protective separation of circuits is necessary. They thus ensure the reliable and safe power supply […]

29. June 2022

Medical technology transformers – TRAMAG products explained

Transformers for medical use are a special type of isolating transformer and are used to provide a safe power supply for medical systems and equipment in hospitals and doctors’ surgeries worldwide.

20. June 2022

Quality assurance made by TRAMAG

Not only during the production itself, but also from the receipt of the materials to the packaging and shipping of the final products, our employees are trained to carefully monitor every process.

10. June 2022

The testing process – made by TRAMAG

TRAMAG has stood for high-quality winding goods for almost 100 years. That is why all our products are 100% tested before they leave the factory.

8. June 2022

Vacuum impregnation – made by TRAMAG

The impregnation process for transformers, chokes and filters is equivalent to an impregnation process of the winding material. TRAMAG uses synthetic resin of special viscosity as the impregnating agent, which hardens completely.


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