29 January 2024

CAP-XX Limited

("CAP-XX" or the "Company")

Update on Patent Infringement

Further to the Company's announcement on 10 January 2024, CAP-XX Limited, a world leader in the design and manufacture of supercapacitors and energy management systems, announces that it has filed a notice of appeal to the Federal Circuit Court of Appeals following the Delaware District Court judgment in favour of Maxwell Technologies Inc. in relation to the patent infringement case asserted by CAP-XX.

The appeal process is at a preliminary stage and there can be no certainty as to the timing of the appeal process or, ultimately, whether the appeal will be heard by the Federal Circuit Court of Appeals.

Further updates will be provided as appropriate.

For further information contact:

CAP-XX Limited

Pat Elliott (Chairman)                                                                             +61 (2) 9157 0000

Lars Stegmann (Chief Executive Officer)

Allenby Capital (Nominated Adviser and Joint Broker)

David Hart / Piers Shimwell (Corporate Finance)                                      +44 (0) 20 3328 5656

Tony Quirke / Stefano Aquilino (Sales and Corporate Broking)

Cavendish Securities plc (Joint Broker)

Neil McDonald / Pearl Kellie                                                                   +44 (0) 13 1220 6939

Kreab (Financial PR)

Robert Speed                                                                                       +44 (0) 20 7074 1800

Notes to Editors:

CAP-XX (LSE: CPX) is a leader in the design and manufacture of thin, flat supercapacitors and energy management systems used in portable and small-scale electronic devices, and to an increasing extent, in larger applications such as automotive and renewable energy. The unique feature of CAP-XX supercapacitors is their very high power density and high energy storage capacity in a space-efficient prismatic package. These attributes are essential in power-hungry consumer and industrial electronics, and deliver similar benefits in automotive and other transportation applications. For more information about CAP-XX, visit www.cap-xx.com