Li-S Energy Signs Collaboration With Safesky for Defence Drone Battery Testing

Li-S Energy's collaboration with Safesky Systems puts its near-500Wh/kg Australian-made cells on the road to tactical drone batteries, though commercial supply hinges on joint testing and no contract value has been disclosed.
By Josua Ferreira -
  • Li-S Energy has signed a collaboration agreement with Safesky Systems at Land Forces 2026 to test its lithium sulfur cells in tactical drones, and it is explicitly not a supply contract.
  • No contract value, volumes or revenue are disclosed, and commercial supply depends on joint testing results and on the procurement decisions of Safesky's customers.
  • GEN3 cells are approaching 500Wh/kg, close to double conventional lithium-ion, and a Pegasus drone flight covered more than 75 kilometres with 80% more range than a comparable lithium polymer pack.
  • The Geelong-made cells contain no graphite, nickel, cobalt or manganese, giving Safesky's NDAA-compliant platforms an allied battery supply chain.
  • Initial design evaluation is expected to start this quarter, with pack integration and flight testing to follow and no later dates disclosed.
Summarise with AI:

Li-S Energy signs collaboration agreement with Safesky Systems at Land Forces 2026

Li-S Energy (ASX: LIS) has signed an agreement with Safesky Systems Pty Ltd at Land Forces 2026 in Perth, targeting the supply of Australian made lithium sulfur batteries for Safesky’s fleet of tactical drones. Safesky is a Victoria-based company that designs and manufactures tactical uncrewed aerial systems (UAS).

The agreement establishes a framework for the two companies to jointly evaluate, test and integrate LIS cells and battery packs into Safesky platforms, progressing to commercial supply subject to the results.

This is a collaboration agreement, not a supply contract. The announcement does not disclose a contract value, volumes or revenue. Safesky adds to the growing list of Li-S Energy’s Australian defence partners.

Key highlights:

  • Agreement signed at Land Forces 2026 in Perth
  • Targets supply of sovereign-produced lithium sulfur cells
  • Cells can deliver almost twice the range, operating time and payload carrying capacity of conventional lithium-ion batteries, according to the company
  • Commercial supply is contingent on the results of joint testing

Why lithium sulfur batteries matter for tactical drones

Lithium sulfur explained

Drone performance comes down to three things: range, operating time and payload. All three are defined by the battery.

Energy density measures how much energy a battery stores for its weight. The energy density of Li-S Energy’s GEN3 cells is approaching 500Wh/kg, close to twice that of conventional lithium-ion, so a drone can fly further, loiter longer or carry more payload for the same battery weight.

Li-S Energy GEN3 Battery Advantage

A Pegasus drone flight in Australia has already shown the effect in practice, covering more than 75 kilometres on a single Li-S pack with 80% more range than an equivalent lithium polymer pack of the same cell weight.

The company’s high-power Power Cell extends these benefits to multi-rotor platforms such as those developed by Safesky Systems.

Sovereign supply chain advantage

The cells are made in Geelong, Victoria and contain no graphite, nickel, cobalt or manganese, the materials that tie almost every lithium-ion supply chain to non-allied processing. For defence customers, supply chain assurance is a procurement requirement.

Safesky’s NDAA-compliant platforms and Li-S Energy’s Australian-made cells will enable an allied supply chain for both the platform and the battery.

Jack Kormas, Chief Executive Officer, Safesky Systems

“…Li-S Energy gives us an Australian made battery with the potential to materially extend the endurance and payload of our platforms, while removing one of the last non-allied dependencies in our supply chain…”

Safesky Systems: the drone partner

Safesky is headquartered in Melbourne, Victoria, with operations in Australia and the United States. Its systems are National Defense Authorization Act (NDAA) compliant and built to maximise the use of allied supply chains.

The announcement lists the following current platforms:

Platform Type Role
VTRX Fixed-wing VTOL Tactical mothership, ISR and strike platform
Sentinel Tactical multirotor UAV Surveillance, training and target operations

Safesky’s company profile also lists the Boomerang tactical command and control UAS.

Safesky will also participate in Army Innovation Day 2026 (AID26), which forms part of the Australian Army’s ongoing approach to innovation and experimentation.

Pathway to commercial supply and next steps

What happens next

Under the agreement, the two companies plan to work through the following steps:

  1. Evaluate LIS cells against the power and energy requirements of Safesky’s platforms
  2. Build battery packs for integration
  3. Conduct ground and flight testing
  4. Progress to commercial battery supply for Safesky’s drone fleet, which is the stated intention

Initial design evaluation is expected to commence in the current quarter, with battery pack integration and flight testing to follow. No later dates are disclosed.

Commercial outcomes will depend on the results of this work and on the procurement decisions of Safesky’s customers.

Management view

Dr Lee Finniear, Managing Director and Chief Executive Officer, Li-S Energy

“Safesky builds exactly the kind of tactical drones where our batteries make the biggest difference… We are excited to work with the Safesky team on what we believe will be a long and fruitful collaboration.”

Li-S Energy has stated it will keep the market informed of material developments in accordance with its continuous disclosure obligations.

Investors exploring how Li-S Energy’s qualification work is progressing in the United States can read our detailed coverage of the US Army cell shipment, which explains the CASA, PHMSA and FAA approvals and what a successful evaluation could mean for procurement.

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Frequently Asked Questions

What is a lithium sulfur battery?

A lithium sulfur battery is a battery chemistry that stores more energy for its weight than conventional lithium-ion. Li-S Energy's GEN3 cells are approaching 500Wh/kg, close to twice that of conventional lithium-ion.

What did Li-S Energy sign with Safesky Systems at Land Forces 2026?

Li-S Energy signed a collaboration agreement to jointly evaluate, test and integrate its lithium sulfur cells and battery packs into Safesky's tactical drones. Commercial supply would follow only if testing results support it, and no contract value has been disclosed.

When will Li-S Energy and Safesky start testing batteries in drones?

Initial design evaluation is expected to start in the current quarter. Pack integration and ground and flight testing follow, but no later dates have been disclosed.

Why do defence drone makers want Australian-made batteries?

Defence customers treat supply chain assurance as a procurement requirement. Li-S Energy's Geelong-made cells contain no graphite, nickel, cobalt or manganese, which avoids the non-allied processing that most lithium-ion supply chains rely on.

Josua Ferreira
By Josua Ferreira
Partnership Director
Josua Ferreira holds a Bachelor of Commerce in Marketing and Advertising and brings a background in publication, business development, and ASX market storytelling. He has worked with listed companies across the resource sector and broader market, combining sharp commercial instincts with a genuine commitment to keeping investors informed.
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