Step Energy

The self-charging phone case

Step energy

Step Energy is a self-charging smartphone case. An integrated pendulum mechanism generates energy which is converted into electrical voltage and ensures that the phone battery is charged quickly.

Short description of the invention

This idea is a mobile phone case that recharges the battery of the mobile phone through everyday and deliberate movements. Step Energy is equipped with a mechanical "pendulum mechanism". The pendulum movement is stored by means of a spiral spring.

This mechanical power is only released when a small switch is pressed. The gears translate the stored power into the correct speed and torque.

With this released power, an electrical voltage is generated and the smartphone battery can be charged.

Advantages of the invention

Benefits of Step Energy

Battery charging everywhere

The smartphone can also be charged on the go without an electrical power source. The invention offers the ideal solution when, for example, you are on the road, urgently need to make a call and only have low battery left.

Switch regulation

So that the mobile phone does not keep charging itself while it is worn on the body (because it may damage the battery), you can switch the function on and off.

No Power bank required

With Step Energy, it is no longer necessary to carry a power bank with you because the charging process takes place directly via the mobile phone case.

Charging through movement and without external power
By moving the smartphone and thus also the pendulum, the battery can be charged regardless of location - without an external power source.
Possible areas of application

Area of application


When on the move

Heavy use

Heavy use of the smartphone

Live tracking

GPS Navigation

3D Visualisations


Property right

Utility model

A utility model protection was filed for the invention at the Austrian Patent Office:

Type of protection
AT Utility Model Protection
Reference number
GM 66/2021
Date of registration
Main claim
Smartphone case (1) with charging function for smartphones, characterised in that it has a mechanical pendulum mechanism (2) for generating electricity on the back, in which a weight revolves around an axis, a spiral spring (3) for storing electricity, gear wheels (5) which transmit the forces by means of the corresponding torque and the correct speed, nanogenerators (6) which generate the low voltage and a switch (4) for activating the mechanical power.



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jmw Innovation GmbH has been successfully implementing and marketing ideas at two locations (Salzburg/ Berlin) for over 20 years. Thanks to our many years of networking, our passion for new ideas and our experienced employees, we are THE first point of contact for new ideas in the German-speaking world.

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