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BMZ-Group Newsletter





ESS - Energy Storage Systems

In case of a dealer/installer request for spare parts, complaints, or service for the Energy Storage sector, please fill out this service request form (red fields are mandatory) and send it by email to our ticket address:


You will receive a confirmation email with a CS number (for example, CS123456) as a reference number, and the process will be handled as quickly as possible.

BMZ energy storage solutions that make you independent

Using regenerative energies at home - energy storage solutions from BMZ make it possible. Energy storage solutions with integrated security concept are highly efficient and flexible home storage systems for private and commercial applications.

With the modular lithium-ion energy storage, the self-generated, currently not required photovoltaic energy can be stored in battery modules and easily retrieved at a later date. Excess energy is no longer lost.

With the BMZ ESS energy storage system, solar power users become more independent of electricity prices and then use their self-produced green electricity when they need it.


  • Service hotline
  • On-site service
  • Original spare parts depot
  • Pick up service of failure batteries within 48 h (EU)
  • Dispatch of repaired and proofed batteries after 8 working days
  • Fully equipped service center
  • Skilled and experienced employees

Do you have questions about the service or a complaint?

Highly trained specialists and technicians are available to accompany you throughout the entire service life of a product. In addition, there is first-class advice, a professionally equipped service centre and fast processing of complaints.  We offer all this and much more to our customers.

Questions about a complaint?

  • When will my claimed goods be with me?
  • What is the procedure of the complaint?
  • How do I report a complaint?

Service hotline:

Monday to Friday from 8:00 - 16:00 o'clock
Phone: +49 6188 9956-9830
fax: +49 6188 9956-699