The real life of electric vehicle battery is generally around 8~ 10 years, but it mainly depends on personal charging habits and car frequency.
The common types of batteries sold in the market now are probably ternary lithium batteries and lithium iron phosphate batteries. As far as ternary lithium battery is concerned, its charging cycle times can reach about 2500 times. The number of charge cycles here refers to the charge and discharge cycle from full charge to exhaustion.
As far as the family car is concerned, its charging frequency is about 3 days, so it can be used for about 10 years. If it is charged once a day, it can be used for at least 7 years.
Then the lithium iron phosphate battery has more charging cycles, which can reach about 3500 times. If charged once every three days, this battery can last for more than 20 years. In fact, car owners don't have to worry too much, because now the battery of the car has a warranty, and the cycle is about 8 years.