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Why Skeleton?Highest Power
in the Smallest Form Factor

Skeleton's supercapacitors are trusted by clients in AI Data Centre, grid, transportation, and defence sectors
plus Why Skeleton

World's Highest Power, Fastest-Charging Energy Storage

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15+ Years Lifetime

Reliable and efficient, even after 1,000,000 cycles (Supercapacitors) and 50,000 (SuperBatteries).

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100x Faster Charging

Compared to most Li-Ion batteries.
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Rapid Engineering Capabilities

for custom solutions

skeleton Products

High Performance Energy Storage

From cells, to modules and systems. Skeleton is committed to providing customer-centric solutions for your applications.

Systems
Modules
Supercapacitors
SuperBatteries

Grid-Scale Systems

High-power, long lifetime grid-scale energy storage systems for E-STATCOM and datacenter applications.

energy storage systems
Cabinet parameters

Max power (1s)

1132 kW - 2830 kW

Max current (1s)

1400A - 2500A

Nominal voltage:

648V - 1500V

Supercapacitors & SuperBattery Modules

Designed to fit your unique applications, from grid and data center applications and 19" rack cabinets to engine starting for heavy trucks and mining machinery, to automotive low voltage boardnets.

Supercapacitor modules
Main parameters

Voltage options

12 - 162V, can be installed in series/parallel

Lifetime

Up to 15 years or 50 000 - 1 000 000 cycles

High power supercapacitors

Supercapacitors in industry standard D60 and D33 form factors, offering reliable high power, low ESR (1S 0.2-1.6mΩ) with 15+ years of lifetime.

supercapacitor cells
Main Parameters

Capacitance

300 - 5000 F

Specific power

20 - 28.4 kW/kg

Voltage

2.85V or 3.0V

ESR (1s)

0.2 - 1.6 mΩ

Temperature tolerance

up to +65°C/149°F

Balanced High Power and energy storage

SuperBatteries fills the gap between supercapacitors and Li-ion batteries, offering the ideal combination of energy, power, and safety for <45-minute applications.

superbattery
Main Parameters

Charge speed

60 - 90 seconds

Discharge cycles

+50,000

Lifetime

Up to 15 years

Operating Temperature

up to +50°C/122°F

Systems

energy storage systems

Modules

modules

Supercapacitors

12vboardnet-products

SuperBatteries

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plus Customers' Quotes

What Others
Are Saying About Us

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Skeleton Technologies brings the necessary quality mindset to critical applications. The highest power density and efficiency in the industry provides us with a very clear competitive advantage"
Stanislav Vizur
Strategic Purchasing
quotes
Choosing to work with the best ultracapacitor manufacturer on the market was easy. Not only is their technology best suited for our marine and offshore applications but they care deeply about establishing long-lasting relationships with support to us and our clients"
Paul Cairns
Managing Director
quotes
Skeleton Technologies’ ultracapacitors provide a major fuel saving and will reduce maintenance with a long lifetime. It is also a “Plug & Play” solution adding safety and reliability to the vehicles"
Mark Nodder
Former Chairman & CEO
quotes
We have tested all the leading suppliers on the market and are convinced that Skeleton Technologies has by far the best offer. The lowest internal resistance (ESR) and highest efficiency levels of Skeleton’s ultracapacitors lets us explore new solutions that were not thinkable with other products."
Valter Arosio
CEO, DIMAC RED S.p.A.
plus solutions

Energy
Storage Solutions
for Your Unique Needs

Modules and systems, designed and certified to fit your unique applications.

plus Skeleton Locations

Pan-European Company With
German Engineering

Tallinn office
Tallinn, Estonia

Headquarters, Module and Systems Development

Großröhrsdorf
Dresden Superfactory, Germany
Berlin office
Berlin, Germany

Sales, Application Engineering

plus technology

Unique Product Roadmap, Supported by the Largest R&D Team in the Industry

Sustainable Raw Materials

Free from cobalt, nickel, and copper

 

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Robust & Safe

Safe even when pierced, crushed, or overheated, due to no lithiated graphite or lithium plating.

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Curved Graphene

Skeleton's proprietary material allowing unmatched low internal resistance and high capacitance

 

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plus icon Talk to us

Contact Us

Meet your high-power needs with Curved Graphene -based supercapacitor and SuperBattery cells, modules, and systems.

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plus blog & news

Energy Storage Blog & News

We're committed to making a positive impact on our planet — not just today but every day

Skeleton Technologies strengthens growth in Lappeenranta — Europe’s Greenest City
Skeleton Technologies is strengthening its presence in Finland by opening a new research and product (R&D) development unit at LUT University campus area in Lappeenranta this year. This marks the company's second major investment...
Inca Paatela , November 12th, 2024

In today’s global society, energy—specifically electricity—is the backbone of every major industry. From industrial manufacturing to AI data centers, nothing runs without energy. However, with...

Inca Paatela , November 5th, 2024

In today’s AI-driven world, finding reliable backup power systems is a major challenge for industries like data centers. By 2050, it’s expected that electricity will lead the way as the primary...

Inca Paatela , October 31st, 2024

The material market for the battery industry is huge - we are talking about an industry worth of billions, which will grow even more when replacement materials for critical raw materials and rare...

Inca Paatela , October 14th, 2024
plus faqs

Frequently Asked Questions

What are supercapacitors? How do they work?

A supercapacitor is an energy storage medium, just like a battery. The difference is that a supercapacitor stores energy in an electric field, whereas a battery uses a chemical reaction. Supercapacitors have many advantages over batteries, such as safety, long lifetime, higher power, and temperature tolerance, but their energy density is lower compared to batteries. Learn more.

What are SuperBatteries?

Skeleton’s SuperBattery technology is a fast-charging, high power battery technololy, filling the technology gap between supercapacitors and batteries. SuperBatteries offering the ideal combination of energy, power, and safety for <30-minute applications.

What’s the difference between ultracapacitors and supercapacitors?

The short answer is that there is no difference in how the words are used today.  To learn more about the history of these terms, read our blog post “What’s the Difference between and Ultracapacitor and a Supercapacitor?”.

Can supercapacitors replace batteries?

Supercapacitors and batteries serve different purposes. Supercapacitors excel in short-term applications (typically a few seconds of power) and have a longer lifespan, higher reliability, and efficiency in extreme temperatures. Batteries are more economical for long-term energy needs. See our infographic explaining this the differences and to help you choose the right energy storage technology.

What is ESR and why is important?

ESR (Equivalent Series Resistance) measures the internal resistance of a supercapacitor, and it's crucial as it affects efficiency, heat generation, and voltage drop. Lower ESR means higher efficiency, less heat, and better performance, especially in high-frequency applications. The lower the ESR of a supercapacitor, the better the performance.

How do supercapacitors perform in extreme temperatures?

Supercapacitors are capable of operating normally and maintaining efficiency within a temperature range of -40°C/F to +65°C or 149°F, with minimal to no effect on performance. However, high temperature does impact the lifetime of a supercapacitor cell, module, or system.