The Arithmetic of Military Demand for Lithium: Small Tonnage, Inelastic Buyers

In brief

Ukraine's full theoretical drone capacity — more than 8 million First-Person View (FPV) units a year — consumes on the order of 1.2 gigawatt-hours of battery capacity, or roughly 850–1,100 tonnes of lithium carbonate equivalent (LCE): about 0.06 per cent of the 1.63 million tonnes of global lithium supply expected in 2026.

The entire military battery market is worth $1.56–2.5 billion in 2025 depending on the analyst, against a global lithium-ion battery industry measured in hundreds of billions of dollars and growing at a 14 per cent compound annual rate (Benchmark Mineral Intelligence). Batteries absorb 88 per cent of all lithium end-use (US Geological Survey, February 2026); defence does not appear as a separate line in any major demand decomposition.

Defence demand is nonetheless economically distinctive: it is close to price-insensitive, it flows through single state buyers, and it increasingly draws on the same commercial cells and factories as the civilian market — so a ministry's security of battery supply now depends directly on the health of the commercial supply chain.

Counting the tonnes

A typical FPV combat drone flies on a lithium-polymer battery pack — a member of the lithium-ion family that uses a gel electrolyte in a light, flexible pouch, prized by drone builders for its low weight and very high discharge rates, and produced commercially in enormous volume. A common configuration stores between 100 and 180 watt-hours; take a generous average of 150 Wh.

Eight million drones a year — Ukraine's entire theoretical FPV capacity, the largest drone production complex ever assembled — therefore consumes on the order of 1.2 gigawatt-hours of battery capacity annually. At roughly 0.7–0.9 kilograms of lithium carbonate equivalent per kilowatt-hour of finished battery, that equals somewhere near 850–1,100 tonnes of LCE.

Global lithium supply in 2026 will reach approximately 1.63 million tonnes of LCE, according to S&P Global. The most intensive drone war in history therefore consumes around 0.06 per cent of one year's lithium supply. Double the pack sizes, add long-range strike drones with their multi-kilowatt-hour batteries and Russia's mirror-image production, and the total still struggles to reach a quarter of one per cent.

The dollar figures point the same way. Analysts disagree about the size of the military battery market — Mordor Intelligence puts it at $1.56 billion in 2025, growing at 4.78 per cent annually to 2030; Stratview Research sees $2.8 billion by 2028; the most optimistic forecasts reach $2.5 billion growing at 12.5 per cent annually through 2033 — but every one of these figures describes a niche. The global lithium-ion battery industry is measured in hundreds of billions of dollars and, per Benchmark Mineral Intelligence, will grow at a 14 per cent compound annual rate over the coming decade, with lithium demand itself compounding at roughly 12 per cent.

The automotive sector takes about 60 per cent of lithium demand; stationary energy storage has tripled its share in three years to roughly 18 per cent; the US Geological Survey reported in February 2026 that batteries now absorb 88 per cent of all lithium end-use. Defence does not register as a separate line in any of these decompositions. Even the US Defense Logistics Agency's battery procurements — over $200 million annually, plus programme-specific purchases across the services — amount to a marginal sum beside a single gigafactory's order book.

(The $200 million figure comes from the National Blueprint for Lithium Batteries 2021–2030, the Biden-era planning document issued in June 2021 by the Federal Consortium for Advanced Batteries, a grouping of the US energy, defence, commerce and state departments. The Blueprint's climate framing has been discarded by the current administration, but its industrial-base goals — domestic cell manufacturing, domestic processing, reduced dependence on Chinese refining — survived the change of government intact and now receive far larger funding through the July 2025 One Big Beautiful Bill Act, examined in Part IV of this series. The document remains the baseline reference for US battery industrial policy.)

Three properties that matter more than size

Defence demand is almost perfectly price-insensitive. A defence ministry buying batteries for a targeting system does not respond to a doubling of lithium carbonate prices the way a carmaker's procurement office does. The battery is a trivial share of the platform's cost, the platform is a trivial share of the programme, and the customer taxes and borrows in the currency it pays with. In economic terms, defence sits at the bottom of the demand curve: the last buyer to be rationed out when prices rise. In a tightening market this matters at the margin, because buyers who concede nothing to price amplify price spikes for everyone else.

The buyer is a monopsonist with fragmented tastes. A monopsony is the mirror image of a monopoly: one buyer facing many sellers, which normally gives the buyer decisive bargaining power. Each national military is exactly this — and then dissipates the advantage through fragmentation. The Department of War's own Lithium Battery Strategy concedes that the US military manages thousands of unique battery designs while the commercial industry, chasing electric-vehicle volume, moves away from the small cell formats the military prefers. The response is a programme called FAStBat (Family of Advanced Standard Batteries), which pairs the military's electronics and vehicle research centres with the Defense Innovation Unit — a Pentagon office whose specific job is buying proven commercial technology — to standardise military packs around commercially producible formats. Its contractors are battery manufacturers on both sides of the Atlantic, among them the French battery maker Saft, the French defence-electronics group Thales, the US firms NanoGraf and Teledyne, and Greece's Sunlight Group.

Ukraine reached the same destination from below, out of necessity. The Ukrainian firm PAWELL repackages mass-produced automotive LiNMC cells — lithium nickel-manganese-cobalt, the standard high-energy chemistry rolling off electric-vehicle production lines by the million — into drone battery packs, extending fixed-wing strike range by 46 per cent. The achievement is less a new technology than a procurement insight: commercial cells are cheaper, better and vastly more available than anything military-specific.

Military demand runs on the civilian battery supply chain — the same cells, factories, and raw-material dependencies. A ministry's security of battery supply therefore depends directly on the health and location of the commercial market. This is the finding with the longest consequences, because it converts every vulnerability of the commercial chain — examined in Part V — into a military vulnerability.

Where defence money genuinely alters the market's factors of production is in capital, not labour or land. The mines, refineries and cathode plants of the lithium chain serve the electric-vehicle and storage markets and would exist without a single defence contract; military demand adds no measurable pressure on their workforces or their land footprint.

What defence budgets are beginning to change is investment. State balance sheets now underwrite mines and processing plants that private capital, scarred by the 2023–25 price collapse, declined to finance. That development — the state as investor, lender, insurer and stockpiler — is the subject of Part IV.

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Next in the series: Part III — Green Weapons, Electric Weapons.

Principal sources: S&P Global Commodity Insights (January 2026); US Geological Survey (February 2026); Benchmark Mineral Intelligence via Investing News Network (Q1 2026); Mordor Intelligence, Stratview Research and Allied Market Research sizings; Federal Consortium for Advanced Batteries, National Blueprint for Lithium Batteries 2021–2030; US Department of War, Lithium Battery Strategy summary (businessdefense.gov); Defense Innovation Unit, FAStBat announcements; DroneXL reporting on PAWELL (April 2026). The FPV tonnage calculation is the author's own, with assumptions stated in the text.