BYD: The Empire Built From the Battery Up

In 1995, a thirty-year-old chemist named Wang Chuanfu borrowed about three hundred and fifty thousand dollars, gathered twenty employees, and started a company in Shenzhen to make rechargeable batteries.

Wang’s background was not glamorous. Orphaned young and raised by an older brother, he had clawed his way through school to a master’s degree in metallurgy and a job at a government battery institute, where he grasped a simple, powerful insight: as mobile phones and portable electronics exploded across the world, rechargeable batteries would become a vast and strategic industry, one the Japanese giants then dominated. Wang believed he could beat them, not with superior automation, which he could not afford, but with a uniquely Chinese advantage: armies of low-cost, skilled labor doing by hand what the Japanese did with expensive machines. Rather than spend tens of millions on automated lines, he broke battery-making into simple tasks done by large teams of workers, a kind of human assembly line at a fraction of the capital cost. Within a few years BYD was supplying batteries to Motorola and Nokia, two titans of the mobile age, and had listed its shares in Hong Kong.

This was a fine business. But Wang’s ambition was far larger, and in 2003 he made the move that defined the company: he bought a small, struggling Chinese automaker and announced that BYD, a battery company, would build cars. Investors were aghast; the stock fell on the news. But Wang saw what they did not. He was not really getting into the car business. He was getting into the business of putting his batteries into the most important battery-powered product of the coming century: the electric car.

The Man Who Drank the Battery Fluid

The early cars were not good. BYD’s first models were widely mocked as cheap, low-quality imitations of established designs, and the company’s reputation in its early automotive years was poor. But beneath the surface, BYD was accumulating something that would prove far more valuable than any single car: manufacturing capability and battery expertise, built in-house, across an ever-widening range of components.

What pulled BYD from the reputational mud was an American, and the story is one of the most celebrated in modern investing. Charlie Munger, Warren Buffett’s partner, became convinced that Wang Chuanfu was an extraordinary figure, describing him to Fortune as a combination of Thomas Edison and Jack Welch, a man who could solve technical problems like the great inventor and execute like the great manager. On Munger’s urging, in September of 2008, Berkshire Hathaway invested about two hundred and thirty million dollars for nearly a tenth of BYD. There is a famous tale that, to convince the visiting investors of his batteries’ safety, Wang drank a glass of his own battery fluid. Whether or not the showmanship sealed the deal, the investment did something money alone could not: it conferred on an obscure Chinese manufacturer the global stamp of credibility of the world’s most respected investor. BYD was no longer a curiosity. It was a company Warren Buffett believed in.

It is worth being honest about a second force behind BYD’s rise: the hand of the Chinese state. From around 2009, as China launched aggressive pilot programs and generous subsidies to seed an electric-vehicle industry, BYD was a direct and favored beneficiary, its home city of Shenzhen among the first to adopt its electric taxis and buses, its cars buoyed by national policy that made China by far the largest EV market on Earth. BYD’s triumph is genuinely a story of brilliant founder vision and relentless execution; it is also a story of a national champion riding an industrial policy of historic scale. Both are true at once, and the second is a double edge, because the same state support that lifted BYD also makes it subject to the state’s shifting priorities, and abroad it makes BYD an object of suspicion, the target of the tariffs and barriers that now complicate its global ambitions.

The Moat: Owning Every Link

To understand why BYD became the most formidable force in electric vehicles, you have to understand the thing that makes it genuinely different from almost every other carmaker in the world: the depth of its vertical integration.

A typical automaker is an assembler. It designs a car and then buys the pieces, batteries from a battery company, chips from a chip company, motors, electronics, screens, from a sprawling web of suppliers, and bolts them together. This makes the carmaker dependent on its suppliers’ prices, timelines, and shortages, as the entire industry learned painfully when a semiconductor shortage halted assembly lines around the world. BYD is the opposite. Over decades, it built or bought the capability to make, itself, almost everything that goes into its cars: the batteries, of course, but also the semiconductors, the electric motors, the power electronics, even, reaching back up the chain, stakes in the lithium and raw materials. It is one of the only car companies on Earth that can take raw minerals in one end and roll finished electric vehicles out the other, almost entirely within its own walls.

The Triumph, and the War It Unleashed

Armed with this advantage and propelled by China’s enormous push into electric vehicles, BYD’s growth in the 2020s was breathtaking. It expanded from cheap city cars to premium sedans and SUVs, built a sprawling lineup of battery-electric and plug-in-hybrid models for every income level, and went global, exporting across Asia, Europe, Latin America, and beyond. Its $9,500 Seagull hatchback became a symbol of how far it had pushed the cost frontier, an electric car at a price Western manufacturers could not approach, while its 2025 “God’s Eye” advanced-driver-assistance system, offered as standard even on inexpensive models, signaled an ambition to lead on technology and not merely on price. In 2024 it sold over four million vehicles and earned more than a hundred billion dollars in revenue, and it overtook Tesla, the company that had defined the electric car, to become the largest maker of electric vehicles in the world. The obscure battery-maker Elon Musk had once laughed off had taken his crown. For Berkshire, the bet had become one of the most successful in its history; when it finally sold the last of its stake in 2025, it had reportedly made something on the order of forty times its money, a return of nearly four thousand percent.

But here the story turns, and it turns on a paradox at the heart of competition. BYD’s very success, and the success of the dozens of Chinese rivals racing into the same market with government encouragement, produced a catastrophic oversupply of electric vehicles in China. And BYD, the lowest-cost producer, did what the lowest-cost producer is structurally tempted to do: it cut prices aggressively to seize market share, knowing it could survive at prices that would bankrupt its rivals. The result was a brutal price war, which the Chinese themselves began calling “involution,” a self-defeating, all-against-all competition that crushed margins across the entire industry. And it crushed BYD’s too. The company that had grown for years suddenly reported falling profits, a thirty-plus percent profit decline, then a fifty-plus percent one, its first revenue decline in over five years, even as it remained the volume leader. Its stock, which had soared to record highs in mid-2025, collapsed, falling some seventy to seventy-five percent from its peak.

The Decision: Winning the War, Bleeding From It

What Everyone Got Wrong

BYD has been misjudged at nearly every stage.

Mistake #1: “A battery company has no business building cars.” (2003) Reality: The battery was exactly the point; BYD was getting into the most important battery-powered product of the century.

Mistake #2: “BYD is just a low-cost maker of cheap imitations.” Reality: Beneath the early bad cars, it was building the deepest vertical integration in the industry.

Mistake #3: “The market leader’s stock is the safe one to own.” Reality: BYD became the world’s largest EV maker and its stock still fell ~75% when the price war hit margins.

Mistake #4: “Winning a price war is a clean victory.” Reality: The “involution” crushed even the winner’s profits; dominance in units is not the same as profitability.

The Honest Present

The framework demands honesty about the present, and the present is a genuine industrial titan caught in a painful squeeze. BYD in 2026 is, by units, the largest electric-vehicle maker on the planet, with the deepest vertical integration in the industry, a battery and energy-storage business of global scale, and a technology lead in several areas. These are real and durable strengths. But its profits are falling hard under the price war, its margins are compressed, and its stock trades far below its 2025 high.

It also faces serious risks beyond the price war: the geopolitical barriers, tariffs and bans, that limit its access to the lucrative American market and complicate its global expansion; questions about whether its overseas factories can match its Chinese cost structure; and the perennial uncertainties of being a Chinese national champion subject to the shifting priorities of the state. The bull case is that BYD’s vertical-integration moat will let it outlast the price war and emerge as the dominant survivor of the global EV transition; the bear case is that the involution, the geopolitics, and the margin pressure cap its returns for years. The empire built from the battery up has won its war for dominance. Whether it can now win the harder war for profit is the question its future turns on.

Why This Matters to Investors

BYD offers several lessons an investor can carry anywhere. The first is the power of vertical integration: a company that controls the critical inputs of its product, rather than buying them, holds a cost-and-resilience advantage a pure assembler can never match. The second is a sharp warning against confusing market leadership with shareholder return: BYD was the undisputed leader and its stock still fell ~75%, because a price war can crush the profits of every participant, including the winner. And the third is the value of patience: BYD’s moat was built over decades of being underestimated, the foundations of dominance laid in obscurity long before they paid off. Studying BYD trains an investor to look for who controls the supply chain, to separate competitive position from profitability, and to respect the slow, unglamorous accumulation of capability. None of this is investment advice.

Lessons in Order of Depth

On the surface: the Method

Vertical integration, owning the links of your own supply chain rather than buying them, is one of the most powerful structural advantages a manufacturer can possess. BYD’s ability to make its own batteries, chips, motors, and materials lets it control its costs, escape the shortages that cripple assemblers, and build a car for a price no one buying off-the-shelf parts can match. Understand where the real leverage in a supply chain lies, and recognize that the company which controls the critical inputs, rather than depending on others for them, holds an advantage in both cost and resilience that a pure assembler can never replicate.

Below the surface: the Money

BYD is a stark lesson that market leadership and shareholder return are not the same thing. An investor who bought BYD because it was, indisputably, the world’s largest and most dominant EV maker still watched the stock fall some seventy-five percent, because dominance in units did not translate into protected profits once the price war compressed margins across the industry. Never confuse a company’s competitive position with its profitability or its stock’s prospects; a business can be winning the battle for market share while losing the battle for earnings, and a price war, even one you are winning, can be ruinous for the financial returns of every participant, including the victor.

Below that: the Mind

BYD’s origin holds a lesson about patience and the willingness to be misunderstood for years. For a long time BYD was dismissed as a low-cost imitator making cheap knockoffs, and the market scoffed when a battery company declared it would build cars. But Wang Chuanfu was playing a far longer game than his critics understood, accumulating, quietly and unglamorously, the in-house manufacturing capability that would one day become an unassailable moat. The foundations of a great competitive advantage are often laid in obscurity and even ridicule, the patient accumulation of capability looks like nothing, or worse, for years before it compounds into dominance, and the temperament to keep building through a long stretch of being underestimated is one of the rarest and most valuable a founder can have.

At the deepest level: the question it leaves us

BYD forces us to confront an uncomfortable truth about competition itself: that the relentless, all-against-all struggle we celebrate as the engine of progress can, past a certain point, turn destructive, consuming the very profits and stability that make an industry worth competing in. The Chinese have a word for it, “involution,” the sense of a competition so intense that everyone runs harder and harder only to end up worse off, a race with no winners. BYD’s price war drove prices down and technology forward, a genuine boon to consumers, while simultaneously destroying the profitability of an entire industry and threatening the survival of the very companies whose competition produced the progress. The deepest question BYD leaves us is where the line falls between the healthy competition that drives innovation and the ruinous competition that destroys value, whether a market can compete itself to death, and whether the dominance the strongest competitor wins through a price war is a true victory or merely the last one standing in a field it has helped to scorch, a question that applies not only to electric cars but to every industry organized around the belief that more competition is always and everywhere better.

The Legendary Scorecard

Eight fixed categories, each scored out of ten. The overall is an editorial verdict, a judgment, and explicitly not a weighted average.

Category	Score	Note
Founder Vision	9	Wang Chuanfu saw the electric car inside a battery company decades early
Innovation	8	The Blade battery and a deep technology stack, built through relentless in-house engineering
Execution	9	From mocked imitator to the world’s largest EV maker through extraordinary operational scaling
Moat	8	The deepest vertical integration in autos, a powerful but price-war-tested cost moat
Capital Allocation	8	Decades of patient reinvestment into owning the whole supply chain
Wealth Creation	8	A staggering long-term compounder (Berkshire’s ~40x), though lately a brutal drawdown
Durability	7	Real strengths, but exposed to the price war, geopolitics, and national-champion risk
Historical Importance	8	Electrified the car at mass scale and embodied China’s industrial rise
Overall Legendary	8.0	Editorial verdict: a formidable industrial moat, shadowed by the war it is winning and bleeding from

At a Glance

The BYD Timeline

• 1995: Wang Chuanfu founds BYD in Shenzhen with borrowed money and 20 employees to make rechargeable batteries.
• 1996-2002: It grows into a major battery supplier to firms like Motorola and Nokia and lists in Hong Kong (2002).
• 2003: It enters the car business by buying a struggling Chinese automaker.
• 2008: Warren Buffett’s Berkshire Hathaway invests ~$230M for ~10%, conferring global credibility.
• 2020: BYD launches the Blade battery, a key advance for its EV growth.
• 2023-2024: It becomes the world’s largest EV maker, selling ~4.27M vehicles and earning ~$107B revenue in 2024.
• 2025: It surpasses Tesla in pure electric sales, but a domestic price war crushes margins, and Berkshire fully exits with a ~3,890% return.
• 2026: BYD pivots from volume to value as profits fall sharply and its stock trades far below its 2025 peak.

Key Numbers

Related Reading

BYD is best read against Tesla, the company that defined the electric car and that BYD overtook to become the world’s largest EV maker, a rivalry between Silicon Valley software and Chinese manufacturing. Read it with Berkshire Hathaway, whose 2008 investment in BYD became one of the most successful bets in its history, and with TSMC, another master of manufacturing depth whose control of its own production echoes BYD’s vertical integration. For the underlying principle, visit our hub on cost moats and the discipline of building capability over decades.

Go Deeper

The Complete Trader’s Edge book builds the full Mind, Method, and Money framework that turns stories like this into a repeatable way of reading any company. BYD teaches you to find who controls the supply chain and to never confuse market leadership with profitability; the book teaches you the discipline to act on both.

This article is part of the Greatest Companies series, adapted from the book Greatest Companies, now available on Kindle.

Frequently Asked Questions

Who founded BYD, and what did it originally make?

BYD was founded in 1995 in Shenzhen, China, by Wang Chuanfu, a chemist with a background in metallurgy and batteries, starting with about $350,000 in borrowed money and 20 employees. It began as a maker of rechargeable batteries for consumer electronics, supplying firms like Motorola and Nokia, before entering the car business in 2003.

Why did Warren Buffett invest in BYD?

On the urging of his partner Charlie Munger, who was deeply impressed by founder Wang Chuanfu, calling him a combination of Thomas Edison and Jack Welch. In September 2008, Berkshire Hathaway invested about $230 million for nearly 10% of BYD. The stake became one of Berkshire’s most successful investments; when it fully exited in 2025, it had reportedly made a return of nearly 3,890%.

What is BYD’s competitive moat?

Its extraordinary vertical integration. Unlike most automakers, which assemble cars from parts bought from suppliers, BYD makes nearly everything itself: batteries, semiconductors, motors, power electronics, even upstream raw materials. This lets it control costs, avoid supplier shortages, and build electric cars more cheaply than rivals, an advantage built over decades that is very hard to replicate quickly.

Why did BYD’s stock fall so much in 2025-2026?

Because of a brutal price war in China’s electric-vehicle market, which the Chinese call “involution.” Massive oversupply led BYD, as the lowest-cost producer, to cut prices aggressively, crushing margins across the industry, including its own. BYD reported sharp profit declines and its first revenue drop in over five years, and its Hong Kong shares fell roughly 70-75% from a mid-2025 peak, even though it remained the world’s largest EV maker.

Is BYD still the largest EV maker in 2026?

Yes, by units it remains the world’s largest electric-vehicle maker, with the deepest vertical integration in the industry and a global battery and energy-storage business. But it is in a difficult phase, pivoting from volume to value to defend margins amid the price war, while facing geopolitical barriers to markets like the United States and questions about its overseas factories. None of this is investment advice.