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Unlike jet engines or EUV lithography, automakers learned from experience: almost none of them trust a single battery supplier. But there's a real exception — when dependency runs through a captive joint venture, "multiple suppliers" doesn't always mean "no risk."
No clicking required — here's the captive joint-venture dependency behind GM's Ultium EVs.
LG Energy Solution
Joint venture partner
Ultium Cells
Sole supplier for the Ultium platform
Press Play and watch the map build itself scene by scene — suppliers, customers, competitors, and a failure simulation, all straight from the real graph.
A deliberate multi-supplier strategy — not dependency on one supplier.
Tesla → CATL
Tesla sources LFP battery cells from CATL, particularly for standard-range vehicles and cars built in its Shanghai Gigafactory.
Tesla → LG Energy Solution
Tesla sources battery cells from LG Energy Solution in addition to Panasonic and CATL, part of a deliberate multi-supplier strategy rather than depending on one cell maker.
Tesla → Panasonic Holdings
Panasonic has been Tesla's longtime battery cell partner at Gigafactory Nevada, historically its primary cell supplier for many models — but Tesla has since diversified to also use LG Energy Solution and CATL cells, and manufactures its own 4680 cells in-house.
GM and Ford chose a different model: a dedicated joint venture per platform. It looks like partnership, but in practice it's dependency on one supplier for that entire platform.
Ford's BlueOval battery plants under construction/operating in Kentucky and Tennessee depend on cells from BlueOval SK, a joint venture Ford does not fully own — Ford has no comparably-scaled alternative source for these plants' output.
GM's EVs built on its Ultium platform depend on battery cells from Ultium Cells, a joint venture GM does not fully own — GM has no comparably-scaled alternative cell source for its Ultium-platform vehicles today.
Every battery maker depends on battery-grade refined lithium — and here, unlike lithium mining itself, there is real concentration.
Refined Battery-Grade Lithium
Required by: CATL, LG Energy Solution
Albemarle is one of the world's largest producers of refined battery-grade lithium chemicals, though a large share of global lithium refining capacity is concentrated in China rather than with any single Western producer.
The network map below is the real graph, not an illustration. Every node and every line is clickable.
👆 Click any company on the map to see what happens if it "fails", or click a connecting line to see the evidence behind it.
Pick a node to fail:
Select a node above, click one directly on the map, or just click "Show me an example."
Impact is marked "confirmed" only once every known alternative supplier for that component is also down. "Secondary" exposure flags a dependency edge with no known sole-source alternative. The dark-red nodes on the map are structural single points of failure in the graph itself — independent of whatever you simulate.
Counted directly from the graph — not an AI-generated score. Notice the contrast with aviation and semiconductors: here, most companies are deliberately multi-sourced.
BYD stands out here: unlike Tesla, GM, and Ford, it manufactures its own "Blade Battery" cells in-house — the same vertical integration Intel has in chip manufacturing.
CATL ↔ Panasonic Holdings
CATL and Panasonic are both major global EV battery cell manufacturers competing for automaker contracts, alongside LG Energy Solution and SK On.
LG Energy Solution ↔ CATL
LG Energy Solution and CATL are rival battery cell makers, representing the two dominant chemistries (NMC vs. LFP) competing for automaker contracts worldwide.
Tesla ↔ BYD
Tesla and BYD are the two largest EV makers globally by volume, competing directly in most major markets.
A real business description, StockIQ's current score, and the latest real headlines for each company.
Albemarle
ALB · Materials
57
C
No description available.
ChartMill · What's going on in today's session: S&P500 movers · today
Benzinga · Albemarle Q2 2026 Earnings Call Transcript · today
BYD
BYDDY
No score available
No description available.
Yahoo · Boyd Group Services Inc. Announces Third Quarter 2026 Cash Dividend · today
Yahoo · BYD (SEHK:1211) Following Share Price Swings Is The Supply Chain Story Still Undervalued · today
Ford
F · Consumer Discretionary
No score available
No description available.
ChartMill · Most active S&P500 stocks in Thursday's session · today
SeekingAlpha · Ford Motor Company (F) Presents at Morgan Stanley's 14th Annual Laguna Conference Transcript · today
General Motors
GM · Consumer Discretionary
No score available
No description available.
CNBC · GM touts new V-8 engines in revived ‘truck wars’ with Ford, Ram amid lackluster EV sales · today
Benzinga · 'GM to Produce Patriot Missile Parts as U.S. Faces Critical Arms Shortage' - Wall Street Journal · today
Panasonic Holdings
PCRFY · Technology
No score available
Panasonic Holdings Corporation, along with its numerous subsidiaries, operates as a global enterprise engaged in the conceptualization, production, distribution, and maintenance of a broad spectrum of electrical and electronic goods. Its operations are strategically segmented. The Appliances division offers a comprehensive array of consumer electronics and home comforts, including climate control units, refrigeration, laundry machines, cleaning devices, cooking appliances, personal grooming tools, televisions, cameras, video gear, home audio setups, landline phones, commercial display cases, as well as industrial components like compressors and fuel cells. The Life Solutions segment focuses on enhancing living environments, providing items such as lighting fixtures, energy solutions like solar power systems, air purification and ventilation equipment, spatial sanitizers, interior and exterior construction materials, kitchen and bathroom fittings, bicycles, and products supporting nursing care. The Connected Solutions group delivers sophisticated technological solutions for businesses and industries, encompassing in-flight entertainment and communication systems for aircraft, machinery for electronic component assembly, welding equipment, computing devices (laptops and tablets), projectors, and professional-grade audio-visual systems. For the Automotive sector, the company supplies in-car infotainment and audio systems, head-up displays, control switches, camera modules, advanced driver assistance technologies, vehicle mirrors, and various lithium-ion batteries vital for both conventional and electric vehicles. Finally, the Industrial Solutions segment provides an extensive catalog of electronic components, including relays, switches, power supply units, industrial motors, sensors, capacitors, coils, resistors, materials for electronic circuit boards, semiconductors, LCD panels, and a diverse range of small-format batteries (lithium-ion, dry, and micro). This Japanese conglomerate, initially known as Panasonic Corporation, was established in 1918 and bases its headquarters in Kadoma.
AFP · The missing in Nepal-Tibet flash floods · 19d ago
Motley Fool · Billionaire Hedge Fund Investor Ray Dalio Now Advises Holding a Small Amount of Bitcoin. Here's Why He's Wrong. · 19d ago
Tesla
TSLA · Consumer Discretionary
No score available
No description available.
ChartMill · Most active S&P500 stocks in Thursday's session · today
Yahoo · Tesla Stock Has a Potential Catalyst Wall Street Can’t Ignore · today
This is the third pilot of the X-Ray engine — a hand-curated, documented dependency graph for the EV battery supply chain only. Every relationship is backed by a well-known public industry fact; none of it was generated by AI. This information should not be considered investment advice.