Toyota Revolutionizes EVs: Solid-State Batteries That Will Last 40 Years

The Japanese manufacturer claims its new batteries will outlast the vehicle itself and can be reused in future models.

If nothing changes, solid-state batteries will mark a turning point in the electric vehicle segment. Beyond offering high range and ultra-fast charging, Toyota has announced that these batteries could last up to 40 years, far exceeding the lifespan of any current vehicle. Keiji Kaita, President of Toyota’s Advanced Carbon Neutral Engineering Development Center, explained that current lithium batteries last around 10 years with 10% degradation, while solid-state batteries are expected to maintain the same performance for four decades.

Technological Advantages and Longevity

Although the initial cost of these batteries will be higher, Kaita stated that their long lifespan will offset the investment, gradually bringing the price closer to conventional batteries. In addition, solid-state batteries weigh less and are safer, reducing the risk of fire and supporting a higher number of charge-discharge cycles. This could translate into fewer replacements, lower lifetime costs, and a reduced environmental impact over the life of the vehicle.

Other manufacturers are also advancing in this field. Solid Power, working with BMW, claims their solid-state batteries can exceed 1,000 charge cycles. Harvard researchers developed a battery retaining 80% of its capacity after 6,000 cycles, and Samsung SDI projects batteries designed to last up to 20 years. Toyota, however, positions itself as the leader by announcing a 40-year lifespan, representing an unprecedented qualitative leap in the industry.

Currently, standard EV battery warranties are eight years or 160,000 km, with a maximum degradation of 30%. Tesla, for example, claims its lithium-ion batteries can reach nearly 320,000 km while retaining 90% of capacity. Toyota’s upcoming solid-state batteries would not only surpass these figures but also redefine durability standards for modern electric vehicles, setting a new benchmark.

As for the first application, Toyota Chief Scientist Gill Pratt indicated that it may initially be implemented in a high-power, long-range hybrid, showcased at upcoming mobility shows. Some rumors suggest it could even arrive in the Lexus LFR, successor to the iconic LFA, combining power, efficiency, and the remarkable longevity promised by this next-generation battery technology. Toyota’s electric future is set to break all current barriers of range and durability.