With current technology, the lifespan of electric vehicle batteries is conservatively estimated at 5-8 years. However, the exact lifespan depends on the battery type, usage environment, and frequency of use. After all, battery lifespan is affected by more than just the quality of the battery itself.
Currently, the most common battery types on the market are ternary lithium batteries and lithium iron phosphate batteries. Among them, ternary lithium batteries can have a charging cycle of about 2,500 times. The number of charging cycles refers to one charge-discharge cycle from when the battery is fully charged to when it is completely used up.
For family cars, the typical charging frequency is once every three days. Considering battery degradation and environmental factors, it should last for ten years or so. Even if you charge it once a day, it should conservatively last six to seven years.
Lithium iron phosphate batteries can withstand approximately 3,500 charge cycles. Assuming a charging frequency of once every three days, the battery could last for over 20 years. Even considering environmental factors and battery degradation, 20 years is a reasonable estimate.
There's no need to worry too much about the lifespan of power batteries in new energy vehicles. Nowadays, most car manufacturers offer an 8-year or 120,000-kilometer warranty for their batteries, which is a relatively long period.
