What is the lifespan of lithium-ion batteries in electric vehicles? Are lithium-ion electric vehicles good? The development of electric vehicles in recent years has been incredibly rapid. If you use an electric vehicle every day, do you know how long the lithium-ion battery in an electric vehicle lasts? Actually, the battery warranty policies of various manufacturers are enough to answer this question. After all, even if there are problems with the battery during the warranty period, the manufacturer will cover it.
Lithium-ion battery life in electric vehicles
For new energy vehicles, battery life is mainly divided into two types: cycle life and service life. Currently, the power lithium batteries used in automobiles are broadly classified into lead-acid batteries, lithium-ion batteries, and nickel-metal hydride batteries, with ternary lithium-ion batteries and lithium iron phosphate batteries being the most mature and widely used.
Ternary lithium-ion batteries theoretically have a cycle life of around 1,500 cycles. In actual use, they can achieve more than 800 full charge-discharge cycles, and if the battery discharge is controlled between 25% and 75%, the actual life can reach more than 1,200 cycles.
Assuming a typical ternary lithium-ion battery electric vehicle has a range of 200 kilometers, one complete cycle can actually cover 180 kilometers. 800 cycles can cover 144,000 kilometers. Even considering normal degradation, 120,000 kilometers is not a problem.
Lithium iron phosphate batteries generally have a charge-discharge cycle life of over 2,000 cycles. Even for a car with a range of only 70 kilometers, 2,000 cycles can support 140,000 kilometers of pure electric driving. The only drawback is the low energy density and significant capacity degradation at low temperatures. At 0°C, the capacity will decrease by about 10%, and at -20°C, the capacity will decrease by about 30%.
All BAIC models currently use ternary lithium-ion batteries, which have a longer lifespan than the previous lithium iron ion batteries. Official data shows that the batteries can be fully charged and discharged more than 3,000 times, with a capacity decay rate of less than 15%, and can be used by users for 10 years.
Taking the lithium-ion battery used in the BYD e6 Pioneer as an example, it still retains 80% of its capacity after being repeatedly charged 4,000 times. Based on this, the battery life of the car is estimated to be around 1.2 million kilometers.
Are lithium-ion battery electric vehicles good?
Lithium-ion battery electric vehicles offer more power, charge faster than lead-acid batteries, are lighter, and have less energy loss.
With the popularization of electric vehicles meeting the new national standards, lithium-ion battery vehicles will have a chance for rapid development and may enter a period of explosive growth in the next few years. Therefore, consumers must keep their eyes open and buy lithium-ion battery products from manufacturers that meet the standards.
Lithium-ion batteries are good for electric vehicles. For the same capacity, they are smaller and lighter, making them easier to carry and longer-lasting. They are also resistant to both cold and heat. The only downside is that they are more expensive than lead-acid batteries, but they offer many advantages and save a lot of trouble.
Lithium-ion batteries have a much larger capacity than lead-acid batteries, resulting in longer driving ranges for electric vehicles. However, the cost of these batteries is higher, so users should consider all factors before deciding whether to use them.
In conclusion: Lithium-ion battery electric vehicles are worth buying.
