How Many Kilometers Can a Tesla Battery Last?
1 Answers
Tesla battery lifespan, according to official data, ranges from 450,000 to 600,000 kilometers. In reality, electric vehicle batteries are not that fragile. Domestic policies stipulate that electric vehicles must provide an 8-year or 150,000-kilometer warranty for the battery. During the warranty period, battery degradation should not exceed 30%, meaning that within the manufacturer's specified warranty period, owners do not need to worry about the battery lifespan of their electric vehicles. More details are as follows: 1. Currently, electric vehicle batteries include nickel-metal hydride batteries (mainly used in Toyota's non-plug-in hybrid vehicles), lead-acid batteries (lifespan under three years), and lithium batteries (including lithium iron phosphate batteries and ternary lithium batteries). 2. Pure electric vehicles mostly use lithium batteries, with BYD and Tesla as examples. BYD uses lithium iron phosphate batteries, which have a long lifespan, good safety, and high charge-discharge rates, but relatively lower energy density. This means the same range requires more battery cells, increasing the vehicle's weight and cost. Tesla uses ternary lithium batteries, which have better consistency, more mature production technology, and higher energy density, allowing the same number of battery cells to store more energy. 3. In terms of battery lifespan, lithium iron phosphate batteries can achieve over 2,000 charge cycles. Even with one cycle per day, they can last 5-6 years. However, it's important to note that one cycle refers to fully charging the battery and then completely discharging it. In daily use, people often don't wait for the battery to fully discharge before recharging. For example, if daily usage depletes the battery from full charge to 75%, and it's recharged fully at night, it would take four days to complete one cycle. 4. Ternary lithium batteries can achieve over 800 full charge-discharge cycles in practical use. If calculated at four days per cycle, they can last at least ten years. In terms of range, a ternary lithium battery-powered electric vehicle can generally travel 180 kilometers per full cycle. With 800 cycles, the total range can exceed 140,000 kilometers.