① What’s the Story
While the combined market share of Korea’s Big Three (LG Energy Solution, Samsung SDI, SK On) in the European battery market fell from 60.4% in 2023 to roughly 30% in 2025, Chinese makers’ share flipped from the 20% range to roughly 60%. Yet a report dated September 2, 2026 (UPI) carries a signal pointing in the opposite direction: as the European Union shifts its policy toward reducing dependence on Chinese batteries and key raw materials and strengthening domestic manufacturing capacity, a new opportunity is opening up for Korea’s Big Three, which already have production facilities in Europe.
Industry attention naturally shifts to the question of who can actually supply more batteries to Europe, more cheaply. The answer to that question comes down not to cell chemistry or marketing, but to two axes: the equipment supply chain, and tax/regulatory policy. It is no coincidence that, around the same time, news broke that Chinese equipment maker LEAD Intelligent’s 600 MPa-class isostatic press system is being integrated into gigafactory supply chains across Korea, Japan, Europe, and North America, alongside news that Japan introduced a 2% consumption tax on lithium-ion batteries effective September 1, 2026. This piece answers the question: “If Europe’s door is reopening, what actually walks through that door is not cell chemistry, but three separate variables — equipment, tax policy, and supply-chain reshuffling.”
② Basic Principle
In the battery industry, market share is not decided by cell performance alone. How quickly and how cheaply a front-end equipment line — running from coater to press to slitter to winder — can be installed in a given region determines actual supply capacity. As an analogy: cell chemistry is the recipe, and manufacturing equipment is the kitchen. No matter how good the recipe is, if the kitchen (the mass-production line) is not physically present in Europe, that dish cannot be put on Europe’s table. The fact that Korea’s Big Three already hold gigafactories in Hungary and Poland means they have already secured that European “kitchen.”
Source: reconstructed by the editorial team from reports cited in the article (UPI, September 2, 2026, and others)
A second variable, tax policy, layers on top of this. Japan’s lithium-ion battery consumption tax (2% now, rising to 4% in 2027) directly touches the cost structure of liquid-electrolyte-based batteries, while all-solid-state, sodium-ion, and fuel-cell batteries remain exempt through the end of 2028. This shows that tax policy is being used as a lever to artificially adjust the relative cost competitiveness of specific cell chemistries. The regional diversification of equipment supply chains — as with the isostatic press — follows the same logic. When equipment supply concentrates in a specific country or vendor, geopolitical risk rises, so automakers and cell makers prefer suppliers that can bring equipment into multiple regions at once.
③ Comparison: Three Variables Reshaping Europe’s Battery Market
| Variable | Recent Change | Figures / Timing | Industry Implication |
|---|---|---|---|
| European market share | Korea’s Big Three declining, Chinese makers surging | Korea 60.4% → roughly 30%; China from the 20% range → roughly 60% (2023→2025) | If the EU’s de-risking-from-China policy is actually carried out, there is structural room for a rebound |
| Equipment supply chain | LEAD’s 600 MPa-class isostatic press, operating up to 150°C | Integrated into gigafactory supply chains across Korea, Japan, Europe, and North America (as of August 2026) | Regional diversification of all-solid-state pilot lines accelerating, easing dependence risk on any single vendor |
| Tax / Regulation | New Japanese lithium-ion battery consumption tax | 2% effective September 1, 2026, rising to 4% on September 1, 2027 (all-solid-state, sodium-ion, and fuel-cell batteries exempt through December 31, 2028) | Relative cost of liquid-electrolyte batteries rises, incentivizing a shift to next-generation chemistries |
Source: compiled by the editorial team from reports cited in the article (UPI, September 2, 2026; reports on LEAD Intelligent equipment supply; reports on Japan’s tax change)
What this table shows: a rebound in European market share is a structural opportunity created not by cell performance but by production capacity already on the ground and the direction of policy, while at the same time Japan’s tax overhaul imposes a cost penalty on liquid-electrolyte batteries, using policy to pull forward the shift toward all-solid-state and sodium-ion chemistries.
④ Patent Perspective
In the race to re-enter Europe, the real weapon Korea’s Big Three hold is not brand, but process patents. For example, LG Energy Solution’s dual slot-die coater patent (publication number US20250375790A1, published December 11, 2025, applicant LG Energy Solution Ltd) claims a structure that simultaneously double-coats electrode slurry through two slots in a single die head, while designing the lower, middle, and upper die-lip thicknesses differently from one another to maintain coating-thickness uniformity even on high-speed lines. This type of process patent is harder to design around than a patent on the cell’s own chemistry. Because coating speed and thickness uniformity translate directly into yield and cost, a later-entering equipment maker seeking the same performance often has little choice but to design a similar die-lip structure — which is exactly why structural similarity becomes the central issue in assessing infringement exposure.
Design-around scenario (counter-argument): that said, if the claim pins down a specific numerical relationship — “lower die-lip thickness > middle/upper die-lip thickness” — as a claim element, there remains room to design around part of the claim: for instance, by making all three die-lip thicknesses equal, or conversely making the upper die lip the thickest, or by placing two single slot dies in sequence with an intermediate drying step. In that case, a possible trade-off in production speed or equipment footprint is a cost a later-entering company would have to accept.
⑤ Limitations and Outlook
The scenario of a European rebound rests on a number of optimistic premises. There is no guarantee the EU’s de-risking-from-China policy will actually be carried out as scheduled, and Chinese makers are already increasing investment in local European production facilities, so an “automatic rebound in market share” may be too simple a picture. As a counter-scenario, Chinese makers could increase joint-venture plants inside Europe to route around tariff and regulatory barriers, on a path where the label “Chinese-made battery” itself becomes meaningless. As a strategic alternative, Korea’s Big Three could consider, instead of competing purely on market share, turning their process-patent portfolios (coating, notching, isostatic pressing, and the like) into licensing assets, building a royalty revenue stream through cooperative arrangements with local European equipment makers.
One practical action for planning and IP staff: among your own front-end equipment patents (coating, notching, pressing), first check via a patent map whether any claim elements overlap with the recent equipment order specifications of European and Chinese competitors.
Note: whether a patent registration is maintained, and the outcome of any infringement litigation, can vary case by case; readers should treat the legal assessments in this piece as possibilities rather than definitive conclusions. Any specific matter requires separate expert review.