Li-S Energy has delivered its lithium-sulfur Power Cells to a US Army research centre and completed a near two-hour endurance flight with its Pegasus drone. The milestones advance its defence and aerospace commercialisation pipeline, but neither has yet produced a procurement order or confirmed revenue.
- First lithium-sulfur cell delivery to US Army DEVCOM C5ISR Center
- Pegasus flew almost two hours and more than 75 kilometres on one 382 Wh pack
- Li-S Energy claims 80% greater range and flight time than an equivalent lithium polymer pack on a cell-weight basis
- Phase 4 study continues to examine a manufacturing pathway towards 1 GWh of annual capacity
- Quarterly operating cash outflow was $2.052 million, with $716,000 used in investing activities
US Army Evaluation Opens Defence Qualification Pathway
Li-S Energy Limited (ASX:LIS) has put its lithium-sulfur cells into the hands of a US Government agency for the first time, delivering its new Power Cell design to the US Army DEVCOM C5ISR Center for independent evaluation at Aberdeen Proving Ground in Maryland. The centre is a major US Army research and engineering organisation covering command, communications, cyber, intelligence, surveillance and reconnaissance technologies.
The shipment is an evaluation milestone, not a procurement contract. Li-S Energy says DEVCOM testing could provide exposure to future adoption and procurement opportunities, while the delivery also used the international air-transport approvals secured during the June quarter. The development builds on the US Army battery testing previously reported by the company, but the supplied announcement does not disclose a test timetable, purchase order or potential contract value.
Pegasus Flight Demonstrates Battery Performance
In Queensland, the EATP Pegasus long-endurance drone completed its flight-test programme with an endurance flight of almost two hours covering more than 75 kilometres on a single 382 Wh Li-S Energy battery pack. The aircraft landed with capacity remaining, and Li-S Energy said its cells delivered 80% more range and flight time than an equivalent professional lithium polymer UAV battery on a same-cell-weight basis.
The result follows the Pegasus endurance flight, which had already established the near two-hour test milestone. The comparison is based on 1.1 kilograms of lithium-sulfur cells and excludes pack housing and battery-management-system weight, with flight time assumed to scale linearly with cell energy. That makes the result a useful technology demonstration, though not proof of a commercial aircraft sale.
Scale-Up Studies Move Towards Board Review
The Pegasus partners, V-TOL Aerospace, Halocell Energy and Li-S Energy, now intend to assess further commercial development. The platform was designed to accommodate two battery packs, while the partners say improved solar-array performance could support future missions of five to eight hours and 250 kilometres. Those figures are targets for a future configuration rather than achieved flight results.
Meanwhile, the ARENA-supported Phase 4 FEL-1 feasibility study led by Hatch and four manufacturing optimisation studies continued on time and on budget. The work is examining the infrastructure, capital-cost envelope and development timeline for a phased manufacturing ramp towards 1 GWh a year, with a draft report expected to go to the board for review. The studies cover cathode and anode production, cell stacking and recycling, all areas that will determine whether the technology can move beyond demonstration scale.
Cash Outflows Remain Part of the Commercialisation Equation
Li-S Energy reported net operating cash outflows of $2.052 million for the quarter and net investing outflows of $716,000. Operating payments included $574,000 in net staff costs and $1.742 million in administration and corporate costs, partly offset by $164,000 of interest income and a $114,000 BAS refund. Investing expenditure included $407,000 on property, plant and equipment and $640,000 on intellectual property, partly offset by $231,000 in government grants and $100,000 from an investment disposal.
The quarter also included continued depth testing of 10 Ah cells for MSubs at pressures simulating operation at 1,000 metres, with a final report expected in the October to December quarter. Joint evaluation and integration testing with Safesky Systems is also due to begin, while results from the MSubs programme and the Hatch study should provide the next concrete evidence on qualification and manufacturing readiness. The unresolved question is whether these technical milestones can convert into customer procurement before the company’s scale-up ambitions demand materially greater capital.
Bottom Line?
The technology has cleared two meaningful demonstrations, but the next value test is conversion: DEVCOM evaluation, partner qualification and manufacturing studies must lead to orders or a clearer funding pathway.
Questions in the middle?
- What findings will emerge from the US Army DEVCOM evaluation, and will they lead to a formal qualification or procurement process?
- Can Pegasus move from a successful flight-test platform to a commercial product with a defined customer and price?
- What capital will Li-S Energy require if the Phase 4 study supports a staged expansion towards 1 GWh of annual capacity?