30 April 2025

CAP-XX Limited

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

Change of Auditor

CAP-XX Limited (LON: CPX), a global leader in the design and manufacture of supercapacitors and energy management systems, announces that it has appointed SW Audit as the Company's auditor. SW Audit is an independent member of ShineWing International Limited, the global accounting and advisory network, with over 100 offices across 21 regions.

The Company's audit was put out to tender and following a competitive process where tenders were evaluated on their merits, the Board decided to engage SW Audit as it believes it best suits the Company's current status and future prospects.

The appointment follows the receipt of consent from the Australian Securities and Investment Commission ("ASIC") to the resignation of the incumbent auditor, BDO Audit Pty Ltd, which is a requirement of the Australian Corporations Act 2001.

For further information contact:

CAP-XX Limited

Dr. Graham Cooley (Chairman)                                                         +61 (2) 9157 0000

Lars Stegmann (Chief Executive Officer)

Allenby Capital (Nominated Adviser and Broker)

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

Jos Pinnington / Tony Quirke (Sales and Corporate Broking)

Notes to Editors:

About CAP-XX

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 visit www.cap-xx.com