FastCap® Ultracapacitors
Exceptional Power Density for Extreme Conditions

Electrochem is an exclusive manufacturer of FastCap® Ultracapacitors. These ruggedized ultracapacitors are capable of delivering exceptional power density in extreme conditions. This technology is on the leading edge of innovation, pushing the limits of high-temperature, rechargeable energy storage. These hermetically sealed, laser-welded cells are rated to operate under extreme shock and vibration in temperatures up to 150°C.
FastCap® Ultracapacitors are a new and innovative power solution that can simplify job processes, extend battery life and enable more powerful tool capabilities.
As part of Electrochem’s suite of energy storage products, you can expect the same quality, reliability and expertise that have become synonymous with our other industry-leading power solutions. FastCap® Ultracapacitors are manufactured in our Raynham, MA production facility following the same stringent processes used to manufacture our primary lithium cells. These ultracapacitors can be used as individual cells or designed into a capacitor or hybrid pack.
This technology can provide benefits across many applications and markets. Proven examples include voltage bus stabilization, point-of-load power buffering and transceiver power boosting.
Voltage (Range)
1V – 2V
Capacitance (Range)
33F – 370F
ESR (Range)
8mΩ – 18mΩ
Weight (Range)
21g – 110g
| Product | Nominal Voltage | Rated Capacitance | Initial ESR | Weight | Size | Note | Tech Data Sheet |
|---|---|---|---|---|---|---|---|
| EE100-35 | 2.0V | 38.0 F | 17.3 mΩ | 21.0g | AA size | -40°C to +100°C operating temperature | Contact Us |
| EE100-350 | 2.0V | 370 F | 7.4 mΩ | 110.0g | D size | -40°C to +100°C operating temperature | Contact Us |
| EE125-35 | 1.5V | 35.7 F | 16.7 mΩ | 21.0g | AA size | -40°C to +125°C operating temperature | Contact Us |
| EE125-350 | 1.5V | 360 F | 6.6 mΩ | 110.0g | D size | -40°C to +125°C operating temperature | Contact Us |
| EE150-35 | 1.0V | 33.2 F | 16.4 mΩ | 21.0g | AA size | -40°C to +150°C operating temperature | Contact Us |
| EE150-350 | 1.0V | 345 F | 5.8 mΩ | 110.0g | D size | -40°C to +150°C operating temperature | Contact Us |

