Toyota announces when it plans to release the world's first solid-state EV battery
Published on Oct 27, 2025 at 2:25 PM (UTC+4)
by Henry Kelsall
Last updated on Oct 27, 2025 at 2:25 PM (UTC+4)
Edited by
Emma Matthews
Toyota is gearing up to launch the world’s first solid-state EV battery after substantial work on the technology.
The Japanese manufacturer has been a slower adopter of EVs than many of its rivals, and it has never been certain that they are the future of the auto industry.
But it has been quietly working on new, solid-state batteries for its EVs, which could offer big advantages over regular lithium-ion batteries.
Now, a new development agreement means these new batteries are not too far away, which could shake up the world of electric cars.
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When will Toyota release its solid-state EV battery?
The Japanese company recently announced that it has joined with Sumitomo Metal Mining Co., Ltd.
The deal between the two means Sumitomo can mass-produce the materials needed for the batteries.
With that, the car company has stated it intends to launch solid-state EVs in 2027 to 2028.
This is a significant step forward for Toyota, as it aims to make substantial gains on some of its rivals.
Toyota has been hesitant to produce electric cars, as it’s not been certain they’re the way to go.
It has also been exploring hydrogen fuel-cell cars, with the Toyota Mirai showing that they can work very well.
However, solid-state batteries could be the key to its future success in electric cars.
How solid-state batteries work
Solid-state batteries, in theory, offer some significant advantages over regular batteries.
The batteries are made of a cathode, an anode, and a solid electrolyte.
This allows them to have a higher output, meaning longer driving ranges and faster charging times.
Plus, the lifespan of a solid-state battery should also be longer than the battery in a Tesla.
They are also set to be smaller, meaning lighter batteries and therefore lighter cars.
Plus, they could reduce the risk of fires with an electric car, which is a big safety advantage.
Toyota has actually been working with Somitomo since 2021 to try and make the best battery possible.
Incredibly, Japanese investment into a solid-state supply chain currently stands at $7 billion.
Should they be as successful as they promise, Toyota may suddenly have an advantage over rival manufacturers.
Henry is a content writer with nearly ten years experience, having written for various publications since 2017. Qualifying with a Sports Journalism degree from Staffordshire University, Henry loves all things automotive but has a particular soft spot for classic Japanese cars and anything Lancia. He also has a curious passion for steam locomotives.
