Why are lithium electric vehicles more expensive than lead-acid electric vehicles

Regarding the lifespan of lithium batteries for electric vehicles, many people will be very entangled. How long can a set of lithium batteries for electric vehicles last? Why do some people use lithium batteries for 2 to 3 years, or even 3 to 5 years? In fact, the service life of most lithium batteries is designed to be around 1,000 times (ordinary ternary lithium battery materials), which is 3 to 4 years. The lifespan of lithium batteries for electric vehicles is calculated according to the charging cycle. A common use cycle of lithium batteries for electric vehicles is 500 times. A charging cycle refers to all the power in the lithium battery from the most full to completely empty, but this does not mean that one charge is a charge cycle. For example, when you are using an electric car, if you use only one-third of the electricity to fully charge the electric car each time, then the total of these three times will be counted as one charging cycle. Every time a lithium battery completes a charging cycle, the battery capacity will decrease a little, but this ratio is very small. A high-quality lithium battery will still retain 80% of the original battery capacity after multiple charging cycles. Many electric vehicles The lithium battery can still be used normally after three years of use, so it still depends on the quality of the lithium battery. The theoretical cycle life of a ternary lithium battery is about 1500 times. In actual use, the full charge and discharge cycle is more than 800 times, and when the battery is discharged at 25%-75%, the actual use can reach more than 1200 times. Based on a general ternary lithium battery electric vehicle with a battery life of 200 kilometers, one complete cycle can actually travel 180 kilometers, and 800 cycles can travel 144,000 kilometers. Counting normal attenuation, 120,000 kilometers is not stressful. The charge-discharge cycle life of lithium iron phosphate batteries can generally reach more than 2000 times. Even for a car with a battery life of only 70 kilometers, 2000 cycles can support 140,000 kilometers of pure electricity. The only disadvantage is low energy density and low temperature attenuation. Obviously, the capacity will decrease by about 10% at 0°C, and the capacity will decrease by about 30% at -20°C. Why are lithium batteries more expensive than lead-acid electric vehicles? The cost of lithium batteries has always been the core reason that hinders the replacement of lead-acid batteries by lithium batteries. For the same car, lithium-ion battery models are more than 1,000-1,500 yuan more expensive than lead-acid models, which discourages many consumers. The lifespan of lead-acid is about 2 years. If it is improperly charged, the life will be reduced by a little more than 1 year; while the life of lithium battery will only decrease after 5 years. Lithium batteries are light in weight and have high energy density. The weight of lithium batteries under the same voltage and capacity is only one third of that of lead-acid batteries. The important thing is that the price of lithium batteries is higher than that of lead-acid batteries, generally about 2 to 3 times the price of lead-acid batteries, but lithium batteries have a longer life than lead-acid batteries, and due to their small size and light weight, the general vehicle performance will be better than the same specifications. The lead-acid battery is good for electric vehicles. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous post: Do you know the basic correct charging method for lithium batteries?