The Ultracapacitor Company
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Overview

As the leader in ultracapacitor technology, Maxwell Technologies is helping to change the way energy is stored all over the world.


Buy NowAvailable in a range of sizes and modular configurations, our BOOSTCAP® products bring new levels of efficiency and power to everything from consumer electronics to hybrid cars and renewable energy sources.

Our proprietary electrode and global manufacturing facilities allow us to deliver unsurpassed value, keeping costs down while tailoring performance to specific applications.

Our ultracapacitors have a demonstrated lifespan of one million recharge cycles, even in extreme environments, reducing maintenance costs and adding value to other power sources.

Available in two distinct types of ultracapacitor—the exceptionally affordable Energy Line, and the high performance Power Line—ensure an ideal solution for virtually any application.

Numerous benefits. Countless applications.

  • Reliable operation in harsh environments
  • Virtually maintenance free
  • Tailored solutions
  • Competitively priced
  • Exceptional efficiency
  • Compact design
  • Extended operating life
  • Environmentally safe
PC Family
Small energy cells
BC Family
Medium power cells
MC Family
Large power cells
Features Features Features
Over 500,000 duty cycles Over 500,000 duty cycles Over 1 million duty cycles
2.5 volt operating voltage 2.5 volt operating voltage 2.7 volt operating voltage
10-year life capability 10-year life capability 10-year life capability
Higher energy vs. electrolytic Higher energy vs. electrolytic Higher energy vs. electrolytic
Higher power vs. batteries Higher power vs. batteries Higher power vs. batteries
Low internal resistance Low internal resistance
Low profile prismatic design Round, double-ended design Threaded terminal or weldable post versions
UL-recognized UL-recognized UL-recognized
RoHS compliant RoHS compliant RoHS compliant