An EV battery’s lifespan varies, based on a number of factors. Typically, the batteries are designed to last the average life of the vehicle, if properly maintained.

Like with gasoline vehicles, the driving range of an all-electric vehicle will vary, depending on variables like outside temperature, driving style and speed, road conditions, tire pressure, A/C use, and more.

Generally, battery performance degrades over time and use; however, there are a number of things you can do to help maintain an EV battery and lengthen its lifespan. Try to steer clear of extended exposure to extreme heat or extreme cold. Also note that charging to full can potentially strain an EV battery.
Source: https://www.autotrader.com/car-tips/ev-battery-maintenance-guide

Toyota offers BEV battery warranty coverage for 8 years, or 100K miles, whichever comes first. In addition to providing for a fully functional battery, the warranty also protects against abnormal loss of capacity, providing for a minimum of 70% of original BEV battery capacity. View the Toyota warranty page for more information.

Excessive use of DC Fast Charging can lessen the lifespan of EV batteries over time. We recommend DC Fast Charging be limited to twice daily. Also, we recommend Level 2 charging when temperatures are at or below freezing. Learn more about DC Fast Chargers versus Level 2 chargers at Toyota’s charging page.

When a battery “dies,” it can sometimes simply refer to it being out of charge, but it can also mean it is no longer functional. This can be due to internal failure (this would throw a diagnostic trouble code), or because it has degraded to the point of losing a significant portion of its energy-storing capacity.

When an EV battery can no longer power a vehicle, it can be combined with other batteries to be installed into a non-automotive application—we call this repurposing. As an example, a group of repurposed batteries can be used as a secondary storage bank, which then gets used to power a house or hospital, or for another non-automotive purpose.

Yes. If an EV battery cannot be repaired, its functional components can be removed, tested and reassembled into a remanufactured EV battery.

Batteries can be broken down by extracting raw materials that can make their way back into the manufacturing process. Toyota is pursuing a closed-loop battery ecosystem that includes reusing, remanufacturing and recycling, based on the condition of the batteries.