Exchange your old fuel cell for the best EFOY of all time!

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We’re here for you

Personal advice, update service, checking the installation situation or repairs: Just arrange an appointment!

Service request


+49 89 673 592-555

Free* Hotline in Europe

00800 / 732 762 78 from the fixed network in Austria, Belgium, Denmark, France, Germany, Italy, the Netherlands, Norway, Spain, Sweden, Switzerland and the UK

Dealer search

We sell our EFOY products worldwide through an authorised dealer network.

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Model check

We’ll help you choose the right EFOY fuel cell model and lithium battery.

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Service request
about your product

Do you have a specific question about your product or would you like to send it to our technical service team? Simply fill out our service request form.

Service request

EFOY Tutorials

Initial configuration of the EFOY app
or the control panel.

You can easily control the fuel cell with the EFOY app via your smartphone or tablet or the control panel ( optional available). Watch our video to see how the initial configuration works and what features the app and the control panel have.

EFOY service fluid

In this tutorial we will show you step by step how to easily refill the EFOY service fluid. The service fluid is only required if your fuel cell explicitly draws attention to it with a notice. This may be the case, for example, after the EFOY has not been used for a long time.


We provide a warranty for your EFOY products. Detailed information about the warranty in your country can be found here and in our download area.

More about the warranty

Service tool

Have you received a message from your fuel cell and would like to know what it means and how you can correct the problem?

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Firmware updates

We are constantly working on improving our products and offer you free firmware updates.

Firmware update


Flyers, certificates, data sheets, instructions, warranty provisions, etc. can be found in our download area.

To the downloads


All answers to frequently asked questions can be found in our FAQ area:

Questions & answers

Contact form

For contact requests you can also use the contact form on our contact page.

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EFOY Newsletter

You will always be up-to-date with the EFOY Newsletter. Subscribe now and be the first to know when there is any news!

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