How long does the battery of an electric car generally last?

In recent years, my country's new energy car sales have exploded, and the number of power lithium-ion batteries that have exceeded the warranty period has also shown a new trend. The new energy cars currently on the market, including BYD, have reached or even exceeded the battery warranty period of the new energy duty-free models. Taking BYD Qin as an example, the factory currently provides a 6-year or 150,000-kilometer warranty for the entire vehicle and a lifetime warranty for battery cells. In addition to the 3-year 100,000-kilometer warranty for the entire vehicle, the SAIC Roewe E50 also deliberately provides Core components such as batteries are supplied with a 5-year warranty of 100,000 kilometers. And BAIC will supply its E150ev battery with a five-year unlimited kilometer promise. 1. Lead-acid battery has a limited lifespan. Simply put, it is a common car battery in multiple series/parallel to form a power source. If the battery is used for a long time, the active lithium and active materials in the battery will be depleted, and the battery will die. 2. The lifespan of lithium iron phosphate batteries will be longer. This type of battery is characterized by a long cycle life, which can reach more than 2000 cycles, and the lifespan can reach 12 years. The charge and discharge rate is high, there is a larger charge and discharge current, and the safety is good. 3. The energy density of the ternary lithium battery is greater. The energy density of the current ternary lithium battery is basically 200Wh/kg. Some higher ones have 240, 250Wh/kg. In theory, the cycle life is about 1500 times, and the life span can reach 10 years, which is basically the same as the life span of the car. Do not replace the battery during the entire cycle. Disclaimer: Some pictures and content of the articles published on this site are from the Internet. If there is any infringement, please contact to delete.