Ultracapacitor technology
Cutting-edge technology
with a real impact
Your cells have very low resistance so are truly high-power devices. I think they are the best in the world of the carbon/carbon type.”

UCDavis, University Center on Sustainable Transportation


What are ultracapacitors?
Ultracapacitors or supercapacitors are an energy storage technology that offers high power density, almost instant charging and discharging, high reliability, extreme temperature tolerance, and lifetimes of more than 1,000,000 charge-discharge cycles.
Ultracapacitors have been in development for decades, but the biggest development steps have happened only in the past 15 years, driven by advances in nanomaterials with Skeleton's Curved Graphene being a prime example of a breakthrough technology.
Ultracapacitors are now delivering significant economic benefits in the form of energy and fuel savings across a wide range of markets including automotive, grid and renewable energy, transportation, and industrial applications.

- 4x power density compared to competitors
- High power (up to 60x compared to batteries)
- 1,000,000+ lifecycles
- Ultrafast charging times (<1 s)

- +72% increase in energy density (16 Wh/L), while maintaining high power
- 1,000,000+ lifecycles
- Ultrafast charging times (<1 s)
- Increased efficiency & lower footprint

- High energy density (65 Wh/kg)
- 50,000+ lifecycles
- Fast charging times (60s)
- Extremely competitive cost-base compared to similar energy storage technologies

From supercapacitor cells to energy storage systems
Our patented Curved Graphene carbon material provides our supercapacitors with superior power and energy density in the supercapacitor industry, and this advantage carries over to our supercapacitor modules and systems.
We make our own Curved Graphene carbon raw material, and produce our supercapacitor cells, modules, and systems to strict quality standards, servicing our customers in automotive, transportation, grid and renewables, and industry.
German quality from the global technology leader in high-power energy storage.





Global reach from the heart of Europe












Saving energy has
never been more important
Taavi Madiberk,
CEO of Skeleton
