SkelCap Ultracapacitors

Superior power &
energy density with
a competitive cost

The SkelCap ultracapacitor cells bring the benefits of our patented production technology to a form factor most commonly found in the industry. With industry-leading performance for mass market applications.

We have tested all the leading suppliers on the market and are convinced that Skeleton Technologies has by far the best offer.”

Valter Arosio
SkelCap ultracapacitors

The most important benefits of
using Ultracapacitors

Energy density
The lowest ESR & highest power density on the market

Skeleton Technologies has achieved a major breakthrough in the race to create more efficient energy storage solutions with their ultracapacitors. These high- performance cells boast both an exceptional power density and low internal resistance, making them ideal for a variety of applications.

High power profiles
The highest power distribution with lowest heat generation.

Thanks to their ability generate low levels of heat, ultracapacitors are being used in a variety of applications where power is essential but heat generation needs to be minimized.

Longest lifetime
With durable, long lasting ultracapacitors can enjoy an application lifetime of up to 15+ years.

Ultracapacitors are the new energy storage solution that can keep up with our demand for power. The innovative SkelCap cells also have an application lifetime of 15+ years, making them a reliable and sustainable way to meet all your energy needs!


SkelCap Ultracapacitors

Industry-leading performance in the most popular form factor

The SkelCap ultracapacitor has an output power of up to 3400 farads and is ideal for a wide range of applications, including transportation, industrial, and energy storage systems. SkelCap ultracapacitors are available in the industry standard D60 (60 mm) form factor with specific power performance up to 80 kW/kg and specific energy up to 6.8 Wh/kg.

  • Very long lifetimes of more than 1 million charge cycles
  • A wide range of operating temperatures, from -40°C to +65°C
  • 30% more efficient than batteries
  • Zero maintenance
  • Up to 60 times the power density achieved by batteries
  • No harmful chemicals or toxic metals, easy recycling

Main parameters

D60 supercapacitor cells

  • Voltage: 2.85 - 3 V
  • Capacitance: 3000 - 3400 F
  • Specific power: 22.1 - 28.4 kW/kg
  • Specific energy: 6.8 - 11.1 Wh/kg


SkelCap ultracapacitors
supercapacitor technology

Our technology

Based on a patented raw material, Curved Graphene, Skeleton's energy storage technologies open up completely new applications for hybridization and electrification.
Learn more

Get in touch

We can help you to find the best solution for your needs

Please fill in the form below and our team will get in touch with you to discuss your needs in more detail.

Unfortunately, we can't service private customers - thank you for understanding. If you are curious about using ultracapacitors at home, please have a look at our blog post Ultracapacitors vs. Batteries for more information.


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