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With Promises of Range, Safety, and Ultra-Fast Charging, Toyota Advances in the Race for Solid-State Batteries and Says Its New Technology Could Last Four Decades — Long Enough to Equip More Than One Car
Talking about solid-state batteries is like waiting for a train that never arrives, but is always “five minutes away.” The promise of this technology, considered the holy grail of electric mobility, has been years in research, but it has not yet reached the market on a large scale. Now, however, Toyota claims to be on the verge of breaking this barrier — and the announcement made at the Japan Mobility Show promises to completely change the automotive industry.
According to the Japanese automaker, its new solid-state batteries are designed to last up to 40 years, surpassing not only the lifespan of electric cars but also paving the way for the same set of batteries to be repurposed in new vehicles. If proven, this achievement could redefine the concept of sustainability in the automotive sector.
The Battery That Can Last Longer Than the Car Itself
According to the Bureau of Transportation Statistics, the average age of a passenger vehicle in the United States in 2025 will be 14.5 years. This means that the battery developed by Toyota would have 2.7 times more longevity than a regular car.
Keiji Kaita, president of the Toyota Carbon Neutral Advanced Engineering Development Center, told the Australian agency Car Expert that the company’s goal is to achieve 90% capacity after four decades of use.
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“The current lithium battery we manufacture has an estimated lifespan of 10 years with 90% capacity. The solid-state one, in turn, has the potential for 40 years while maintaining that efficiency,” Kaita stated.
This information was disclosed by InsideEVs, based on official statements from Toyota during the Japanese event. If the goals are achieved, this technology could radically transform the way batteries are manufactured, used, and recycled.
High Initial Cost, But Guaranteed Return Over Time
Kaita emphasized that the initial cost of these batteries will be higher, but the investment pays off with exceptional durability.
“Indeed, the initial price is high. But over time, it will approach the value of current batteries, offering in return an extremely long lifespan,” he explained.
In addition to longevity, Toyota’s solid-state batteries promise weight reduction, greater range, lower fire risk, and faster charging — advantages that place the brand ahead of competitors like Tesla and BMW in this technological race.
Comparisons with Other Industry Giants
Currently, Tesla claims that its lithium-ion batteries last about 200,000 miles (321,000 km), with 90% capacity retention. Traditional automakers typically offer eight-year warranties on their high-voltage packages.
Other companies, such as American Solid Power, a partner of BMW, are testing models that withstand 1,000 charge cycles, while a study from Harvard University achieved 80% capacity after 6,000 cycles. Samsung SDI, in turn, designs its solid-state batteries to last 20 years — half of Toyota’s goal.
These advancements indicate a growing consensus: solid-state batteries have the potential to last several times longer than current technologies, reducing costs, replacements, and the environmental impact of lithium and cobalt mining.
Strategic Partnerships and the Future of Technology
To realize its plans, Toyota has formed agreements with companies like Idemitsu Kosan (electrolytes) and Sumitomo Metal Mining (cathode materials), which will prioritize supply to the manufacturer.
There is speculation about where the technology will debut first: the company’s chief scientist, Gill Pratt, suggested that the initial launch may occur in a hybrid model, while other executives mention a compact, high-power application, possibly in the Lexus Electrified Sport Concept, the successor to the legendary LFA.
The first vehicles equipped with the new battery are expected to arrive between 2027 and 2028, marking the beginning of a new era for Toyota’s electric cars. If confirmed, this innovation will not only extend the lifespan of vehicles but also redefine the relationship between technology, sustainability, and global mobility.
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