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South Australia-based defence technology company Praetorian Aeronautics has signed a collaboration agreement with Australian developer of lithium-sulfur and lithium metal battery technologies, Li-S Energy Limited.
The agreement provides a framework to assess the integration of Li-S Energy’s lightweight, high-energy-density battery cells into Praetorian’s AI-driven counter-UAV interceptor drones and airborne platforms.
The collaboration reflects a shared commitment to strengthening Australia’s sovereign defence capabilities by combining two leading edge Australian developed technologies: Li-S Energy’s battery technology and Praetorian’s autonomous unmanned aerial systems.
The initial focus of the agreement is the evaluation and testing of Li-S Energy’s batteries targeting Praetorian’s flagship systems, with potential for broader applications depending on performance outcomes.
“Batteries are a defining constraint in the performance envelope of modern UAS platforms,” said Brett Hill, Praetorian Aeronautics founder and chief executive officer.
“Working with Li-S Energy enables us to explore the use of advanced Australian battery technology that could offer greater range, reduced weight and improved payload capacity – directly supporting the operational goals of our Dagger and Hadrian systems.
“An important factor in choosing Li-S Energy was its proven ability to manufacture battery cells here in Australia.
“We are proud to be working with another Australian company to deliver innovation that enhances national security and supports local industry.”
The integration of Li-S Energy’s lithium-sulfur cells is expected to support improved mission endurance, payload flexibility and reduced system weight, all of which are critical factors in the operational performance of autonomous defence systems.
The collaboration agreement provides a framework for both companies to undertake joint technical evaluations, testing and potential integration efforts. Commercial outcomes will be determined based on the results of these collaborative activities, and both parties remain open to broader opportunities in defence and adjacent markets.
The partnership also underscores Australia’s growing capability in dual-use technologies that straddle civilian and military applications, from electric aviation to tactical defence systems, and positions Li-S Energy and Praetorian Aeronautics as leaders in the development and deployment of sovereign technologies aligned with national strategic priorities.
“We are excited to collaborate with Praetorian Aeronautics, one of Australia’s most innovative defence technology companies,” Li-S Energy managing director Dr Lee Finniear said.
“This partnership provides a pathway to allow us to demonstrate the real-world advantages of our advanced batteries in demanding operational environments where size, weight and performance are critical.
“Praetorian’s plans to build up to 10,000 Dagger interceptor drones per year in Australia offers LIS a significant pathway toward commercial sales, while the combination of our two technologies delivers a substantial leap forward in sovereign defence manufacturing capability.”
