The World's first Reflowable, Slim Profile, Low ESR Ultracapacitor


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Chip Ultracapacitor

Power buffering for lithium-ion batteries, Power Loss Protection for SSDs.

Auxiliary Power Supply for Peak Power, Wireless Sensors, Energy Harvesting, Pulsed Power.

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Ultracap Modules

FastCAP maintains a full  suite of capabilities for module development and testing including a full machine shop, harsh environment test facility, and production environment. FastCAP also works closely with third party validation partners for a wide range of testing capabilities.

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Custom Ultracapacitors

Our ultracapacitor technology is available for customization to suit your specific application. We offer the following parameters for customization:

  • Voltage & Temperature Range
  • Form Factor
  • Shock and Vibration Tolerance
  • Housing Material and Packaging
  • Terminals

NRE for module and pack design available

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High Temperature Ultracapacitor

Developed for down hole operations in Oil and Gas drilling , the EE Series was engineered to operate in the extreme environments (100°C, 125°C, 150°C) common to the energy exploration industry.

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Structural Ultracapacitor

FastCAP's structural technology began as NASA funded research to integrate energy storage into a platforms structure and void spaces. The technology continues where light weight, low volume, and high energy are a must. Applications include light electric vehicles, launch vehicles, and high density storage.

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Advanced Materials

In 2018, FastCAP Systems developed Nanoramic, a division which specializes in material solutions based on nano-carbons. Nano-carbons have exceptional electrical, thermal and mechanical properties at the nano-scale level. Nanoramic synthesizes and incorporates nano-carbons in various materials and transfers these properties at the macroscale level, addressing the needs of several applications.

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Low Temperature Ultracapacitor

Our Low Temperature Ultracapacitors combine FastCAP's ruggedized ultracap technology with low temperature performance; Aerospace and Defense Applications; High Altitude Rechargeable Energy Storage; Data Recorders; Sono Buoys; Remote Telemetry Systems.

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Heat Sink Ultracapacitor

FastCAP ultracapacitor technology enables significantly longer lifetime at high temperature compared to today's ultracapacitors. Based on Vertically Aligned Carbon NanoTubes with very high thermal conductivity, FastCAP developed Heat Sink Integrated High Temperature Ultracapacitors.

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Industry Leading Ultracapacitor Technology

With roots in geothermal research, FastCAP has pioneered extreme environment ultracapacitor technology. We have developed an expertise in creating high performance Ultracapacitors based on advances on the nanomaterial, electrolyte, cell construction and processing levels.


Today, FastCAP is the only company with ultracapacitors capable of high temperature (>125°C), low temperature (< -55°C), and hermetically sealed capacitors capable of enduring the space environment.  FastCAP’s technology has been validated from -110°C to 250°C by Sandia National Laboratory.

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