A Toyota Prius car does not have an indefinite lifespan; it largely depends on the driving conditions, as well as on how long you are using your car, among other factors. The Prius battery usually has a warranty, which is of about 10 years, or 150,000 miles. That is the particular case for the state of California. In other states, the Prius battery has a warranty of around 8 years, namely of 100,000 miles. The warranty implies that if you need a battery replacement during the warranty period, you can get one without any costs.
Driving a Toyota Prius can help you save a lot of money on fuel. Nevertheless, you may have to think about solutions for when you need to switch out the battery. And a new battery for this type of vehicle can often be quite expensive. The good news is that a refurbished affordable Toyota Prius battery can save you money and can last long, in case it was properly made.
Of course, the level of consumption and the general well-functioning of the car depends on the exact type of hybrid battery your car has. Thus, you can either have full hybrid battery, or plug-in versions.