Ultracaps - Cells & Modules

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Small bundles of energy that react as soon as you need them.

Ultra capacitors are currently experiencing an "energy density revolution. At least that's what Elon Musk, who took over the ultracap and battery specialist Maxwell Technologies with TESLA in early 2019, tweeted. The investment in energy storage technology is easy to understand. In the future, electric cars are to be recharged in seconds, or at least not slower than the usual filling process at the gas pump.

In contrast to batteries, ultracapacitors can survive one million charge/discharge cycles and can absorb and release very large amounts of energy at lightning speed. Ultracaps are also lighter than batteries and can be disposed of or recycled in a more environmentally friendly manner. However, there is one drawback to this storage technology: the total energy density is not yet sufficient to cover, for example, the complete power requirements of an electric car. The solution lies in the combination of ultracap and battery.

In view of these challenges, Capcomp GmbH joined forces with well-known ultracap manufacturers at a very early stage in order to supply a wide range of industrial sectors in and outside Germany with appropriate ultracap, hybrid and energy management solutions. Flexibility in terms of manufacturers as well as in the combination options and specifications of different Ultracap cells and modules are crucial for success. Up to a complete customer-specific design as an individual solution.

Ultracap Cells

  • Small, medium and large cells
  •  Standard configurations



Hybrid Capacitors

  • ESD Energy storage capacitors
  • Battery capacitors


Ultracap Modules

  • Small modules, large modules
  • Standard Configurations
  • Customized modules (TECATE)


Ultracaps in Windkraftanlagen

Supercaps are cost savers

Supercaps are innovative energy storage devices that are opening up more and more areas of application due to their technical properties. The originally favoured key application as primary energy storage (e.g. tank) in the car has very quickly turned out to be an aberration. Fortunately, other applications were quickly found in industry and energy technology.

The key application pitch control or blade adjustment in wind turbines is the most prominent example. Here the supercaps were able to establish themselves very quickly as energy storage devices for emergency power supply due to their cycle stability. The benefit for the user of this solution lies in the low maintenance of the storage units. Maintenance work on the wind turbines is expensive and a system failure costs additional money.

Ultracaps als USV
Ultracaps als USV

Ultracaps are innovative

The enormous capacity of individual cells of up to 3000F enables the production of large modules, so that e.g. trams can travel long distances without overhead contact lines and can store the energy gained during braking (recuperation). High performance cells of up to 3000F and very low internal resistance are used e.g. in buses and commercial vehicles for energy recovery and contribute significantly to fuel savings, cost savings and reduction of CO2 emissions.

Supercaps protect the climate

Recuperation of braking energy in buses and trains contributes to energy savings and thus also to CO2 reduction. Supercap (Ultracaps) can be used in the negative temperature range down to -40 °, so they are also suitable for particularly harsh environments as energy storage. Supercap can not only quickly absorb large amounts of energy, but also release very quickly. This feature allows large currents to flow in the shortest possible time, providing short-term power without being destroyed.

Small ultracaps cells as memory backup

Small cylindrical cells have also proven their versatility. These capacitors are, for example, fitted in battery-free flashlights, remote controls, measuring equipment and much more. They are charged via induction or other suitable means. The ultracaps have proven themselves many times over as memory back-up in embedded applications. Ultracaps can be used to prolong the service life of batteries. The potential range of applications is virtually unlimited.