World’s thinnest high power supercapacitors

FREE Supercap Application Whitepaper

Inrush Current-Limiters for Supercapacitors

This application white paper describes: a high-performance current limit circuit; a low-cost current limit design; a simple in-rush current limit circuit; and an integrated solution based on available current limit ICs to be used for a Supercapacitor.

Latest News

CAP-XX awarded US$4.9m in Patent Litigation Victory

CAP-XX, the Australian manufacturer of the worlds thinnest, highest power prismatic supercapacitors has successfully defended its intellectual property in a US court action.  The Delaware District Court has awarded CAP-XX US$4.9M for patent infringement plus costs against Ioxus, Inc., a US manufacturer of supercapacitors. For full details on the award visit]
CAP-XX continues to develop new market leading super capacitors technology, with applications including energy storage, automotive, Smart Watches, Smart Electric Meters and Medical Devices. To see our line up of super thin, high power prismatic supercaps visit

Custom Design Resources

Our skilled Australian engineers can develop supercapacitor solutions to perfectly integrate with your application.

Monitor with custom design


• Micro-controller circuit design
• Optimum supercapacitor sizing
• Accurate lifespan balancing
• Charging circuit design
• Cell balancing and current limiting
• Measure and test supercapacitors and batteries