Series SL01 / 03
Lithium-Sulfur Cells
Cylindrical and pouch formats engineered for UAVs, robotics, and aerospace. Industry-leading gravimetric energy density.
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[ Sulfurlite™ / Gen II ]N 51°30′ • W 0°07′ • Defense Energy Systems
— Battery technology for when failure isn't an option
Power the
unmanned edge.
Valgotech engineers Sulfurlite™ lithium-sulfur cells purpose-built for military drones, long-endurance UAVs, satellites and soldier-worn systems — delivering up to 2× the energy density of conventional Li-ion at a fraction of the weight.
Energy density
400+Wh/kg
Weight reduction
40%
Cycle life
1000cycles
Operating range
−40 / +60°C
[ Built for mission-critical platforms ]
DefenseUnmanned AviationAerospace & SatellitesSoldier SystemsMarine & Subsea
— Mission
Energy systems for the defense decade.
Modern drones, robotics, and unmanned systems are runtime-bound. Their operators are weight-bound. We build the battery chemistry that breaks both constraints — lighter, safer, and engineered around the realities of the modern battlespace.
— Applications
Battery performance that takes mobility farther.
From the warfighter's plate carrier to low Earth orbit, Sulfurlite™ is engineered for the platforms that can't afford to fail.
01 / Defense
Defense & Tactical
Wearable power packs, ground robotics, and tactical comms. Higher energy density means longer missions and lighter loadouts for the warfighter.
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02 / UAV
Unmanned Aviation
Quadcopters, fixed-wing ISR, and loitering munitions. Sulfurlite™ extends endurance dramatically without adding airframe weight.
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03 / Space
Aerospace & Satellites
Smallsats, HALE platforms, and stratospheric craft. Wide operating range and high gravimetric energy density for orbital missions.
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04 / Power
Portable Field Power
Forward operating bases, drone ground stations, and field-deployable energy. Robust pouch and cylindrical cells, built to endure.
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— Technology
Sulfurlite™ — a step-change in energy chemistry.
Our proprietary lithium-sulfur cells replace cobalt and nickel with abundant, low-cost sulfur. The result is a battery that is lighter, safer under thermal stress, and free of conflict minerals — engineered for the platforms that define the next decade of defense and aerospace.
Parameter
Conventional Li-ion
Sulfurlite™
Specific energy
150–250 Wh/kg
400+ Wh/kg
Cobalt / nickel
Required
None
Thermal runaway risk
High
Significantly reduced
Weight per equivalent kWh
Baseline
≈40% lighter
Supply chain
Conflict-mineral dependent
Abundant sulfur
CELL.SL-21700 / R02
Nominal
3.6 V
Capacity
6.0 Ah
— Performance
Sulfurlite™ Gen II / Q4 figures
0Wh/kg
Specific Energy
At cell level, room temperature
0%
Lighter than Li-ion
Per equivalent stored kWh
0+
Cycle Life
To 80% state-of-health
0°C
Operating Window
−40°C to +60°C
— Product Range
Production-ready cells, packs & modules.
Three platforms, one chemistry. Each engineered to drop into mission-critical systems with documented specifications, qualification data, and OEM support.
Series LM02 / 03
Lithium-Metal Batteries
Advanced lithium-metal cells for high-discharge defense and EV applications where peak power is non-negotiable.
View SpecsSeries TX03 / 03
Tactical Power Packs
MOLLE-compatible field power solutions built from Sulfurlite™ modules — for dismounted operations and forward bases.
View Specs— Latest
Field reports & programs.
Partnership2026.05
Valgotech selected for European defense UAV endurance program.
Technology2026.03
Sulfurlite™ Gen II crosses 400 Wh/kg cell-level threshold in independent testing.
Field2026.01
Tactical pack series field-trialed with NATO-aligned ground robotics unit.
— Partner with Valgotech
Building something the battery is holding back?
We work with defense primes, UAV OEMs, aerospace integrators, and prime contractors to qualify Sulfurlite™ into mission-critical platforms. Send your specification — we'll respond within two business days.
Request Engineering Specs