One of the most interesting claims Toyota is making about the bZ4X is that it will have battery capacity retention of 90% after 10 years of ownership.
If this is true it can help people not worry about range anxiety and battery degradation over time.
pressroom.toyota.com
Determined to offer performance that also focuses on safety and peace of mind, Toyota aimed to develop a BEV that offers many years of satisfied ownership. This includes the consideration of overall driving range, particularly in cold climates, and targeting a battery capacity retention of 90% after 10 years of ownership.
In terms of battery safety, Toyota added many measures to help ensure cell integrity was protected. A non-conductive coolant runs through separated flow channels to maintain optimal battery temperature. The battery pack housing is designed to withstand a collision from any angle due to its frame and cross-bracing design.
If this is true it can help people not worry about range anxiety and battery degradation over time.

Revealed: The All-New, All-Electric Toyota bZ4X - Toyota USA Newsroom
ENCINITAS, Calif. (Nov. 17, 2021) – Toyota’s all-electric bZ4X made its U.S. production model debut today. As a leader in electrification, Toyota’s introduction of bZ4X represents the first of a global series of battery-electric vehicles to be introduced under the global […]
Determined to offer performance that also focuses on safety and peace of mind, Toyota aimed to develop a BEV that offers many years of satisfied ownership. This includes the consideration of overall driving range, particularly in cold climates, and targeting a battery capacity retention of 90% after 10 years of ownership.
In terms of battery safety, Toyota added many measures to help ensure cell integrity was protected. A non-conductive coolant runs through separated flow channels to maintain optimal battery temperature. The battery pack housing is designed to withstand a collision from any angle due to its frame and cross-bracing design.