About us

Since we founded our company in 2012, our goal has been to make a valuable contribution in the development and production of mobile energy storage systems. From our point of view, the state of the art offers a variety of possibilities. 

The existing variants of the classic lithium-ion batteries have their qualities and have their firm place in various fields of application. From the very beginning, we have been particularly impressed by the lithium iron phosphate technology in terms of longevity and robustness, which represents a profitable and safe alternative, especially in the logistics sector. 

For this reason, Deutsche Post has been equipping its e-bike fleet with our self-developed LiFePO4 batteries for more than 8 years, which are in continuous use over 40,000 times.

Every success is an incentive for us to approach the next project with new energy and to think one step further. We act flexibly and always solution-oriented in order to fulfill the wishes of our national and international customers quickly and professionally. 

The familial and efficient teamwork within our company creates a working atmosphere from which everyone involved benefits enormously. The expertise and resourcefulness of our highly qualified employees form the solid foundation of AES Akku Energie Systeme GmbH and noticeably increase the added value of our products and services.


Lars Hillermann

Managing Director

A down-to-earth Hamburg businessman – from skilled worker/master craftsman to business economist to information and electrical engineer. He applies his know-how to the development of economically and technically efficient products.


Matthias Behlke

Managing Director

As an experienced tester for electronic systems in aviation, he has a keen eye for detail. He is committed to projects, quality and sales. His motto: “We don’t have problems. We have solutions”.


Viktor Prange

Production Management

Process development is his profession – from product planning and optimization to production and assembly. Quote Mr. Prange: “There’s no such thing as can’t”.


Stefanie Köke

Accounting, Human Resources

She loves playing with numbers. Careful, helpful and up for any kind of fun, she appreciates her varied job. Her credo: “If I don’t know something, I learn”.


Alexander Ruhnke


Our man for market analyses and supplier selection. His credo: “The money is earned in purchasing”.


Jürgen Schaper

Head of Development

Our Head of Development – realizes new solutions together with the production management. Care and foresight have top priority in his work.


Hannah Welsch

Marketing, Business Development North America

Structured, committed and with a lot of passion, she designs the multi-faceted external appearance of the company. With her broad range of experience, she brings color to the otherwise factual B2B subject matter. Quote Ms. Welsch: “The motivation in the team inspires my creativity”.


Richard Bronkhorst

Head of Product Management

Technically very well-versed, the trained bicycle mechanic has been in the bicycle industry for 42 years. Selling is his passion. Quote Mr. Bronkhorst: “Quality is when the customer comes back – and not the goods”.


Alexander Beeker

MSc Ing Development

Whether as a developer, programmer or in the field: Our man for innovative in-house software solutions, IoT and measurement technology. He loves intuitive, harmonious work in the team. A tinkerer and doer – helpful and unerring. His motto: “Don’t get bored”.


Robert Mellinghoff

Head of Sales

Bicycle crazy, eloquent and always open to new things. Our enthusiastic and experienced sales manager sees sales first and foremost as comprehensive consulting. In an in-depth dialog with our clients, he creates individual optimal solutions. Quote Mr. Mellinghoff: “When the sales department works well, customer relationships become real, trusting partnerships”.


David Maurer

Production Control, After Sales

Masters the constant balancing act between planning, goal setting and customer service with his calm, level-headed manner.