Supercapacitor Energy Storage Cells

The best
for high power needs

SkelCap supercapacitors in industry standard D60 and D33 form factors offer high power, 15+ years of lifetime, and excellent reliability.
energy storage Skeleton

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

SkelCap Series - large supercapacitor cells

Superior power & energy density at a competitive cost in the most popular large form factor in the industry

The SkelCap supercapacitor series brings the benefits of our patented production technologies to the D60 form factor, the most popular cell size in the supercapacitor industry. Class-leading performance and a large variety of options offer you the upper hand over the competition.

SkelCap cells are available at 2.85 or 3.0 V with a very low ESR, or internal resistance, long lifetime, and very high power.

Main parameters

D60 supercapacitor cells

  • Voltage: 2.85 / 3.0 V
  • Capacitance: 3000 - 5000 F
  • ESR (DC): 0.14-0.22 mOhm
  • Specific power: 22.1-28.4 kW/kg
  • Specific energy: 6.8-11.1 Wh/kg
SkelCap supercapacitors D60

SkelCap PCB-mountable supercapacitors

PCB-mountable supercapacitors

The SkelCap SCA0300 are Skeleton's answer for the D33 L61 form factor - small supercapacitor cells with excellent power density, low ESR, and long lifetime. 

At 2.85V, the SCA0300 have one of the highest operating voltages on the market. Moreover, the low internal resistance of the cells leads to the lower heat generation and a longer application lifetime compared to other supercapacitors in the same size and form factor. The durable design and small size make the cells ideal for a variety of applications, for example energy regeneration systems and power quality applications. 

Main parameters

PCB-mountable supercapacitors

  • Voltage: 2.85 V
  • Capacitance: 300 F
  • ESR (DC): 1.6 mOhm
  • Specific power: 20.0 kW/kg
  • Specific energy: 5.3 Wh/kg
PCB supercapacitors
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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