What kind of battery is generally used for electric vehicles?

Electric vehicles have been developed for more than 20 years, and they generally use lead-acid batteries. In recent years, there has been a rookie in the electric vehicle battery market-lithium batteries. So, what are the advantages and disadvantages of lead-acid batteries and lithium batteries? 　　The advantages of lead-acid batteries: 　　1, good safety performance. The lead-acid battery is easy to feed, so you can be beaten and beaten. You can continue to use it after a little repair.　　2, the price is cheap. The price of lead-acid batteries is about 1/3 of that of lithium batteries, which shows the low price.　　 3. Recyclable and reverse repair. Lead-acid batteries are highly recyclable. After being worn out, you can go to the electric car shop to exchange the old for a new one. If you make up the price difference, you can exchange for a new set of batteries, minimizing the loss, which is a great benefit to users. The lead in the battery can also be recycled, reducing environmental pollution.　　 Disadvantages of lead-acid batteries: 　　 heavy weight, limited battery capacity, short life span, lead-acid batteries are generally within 400 times of deep charge and deep discharge, and the life span is about two years.　　The advantages of lithium batteries: 　　1: light weight and small size. The volume of a lithium battery is 2/3 of the volume of a lead-acid battery, and its weight is about 1/3 of the weight of a lead-acid battery. Lithium batteries of the same volume have higher capacity than lead-acid batteries, and the reduction in weight makes electric vehicles lighter, and their endurance has also increased by about 10%.　　 2: Long life. The average lifespan of lithium batteries is about 4 years, which is about 1.5 times longer than that of lead-acid batteries. The battery has more than 500 charge and discharge cycles. The battery has no memory and has strong shock resistance.　　3: Overcharge resistance, good charge and discharge resistance. Under normal temperature, the lithium battery can be charged continuously for 48 hours without any accidents such as battery expansion, leakage and rupture, and the capacity remains above 95%. And under the special charger, it can charge and discharge quickly.　　 Disadvantages of lithium batteries: 　　 The production cost of lithium batteries is high. The expensive production equipment and labor costs account for about 40% of the production cost, and the price is about three times that of lead-acid batteries. The price-performance ratio brought by its triple price is not high, and it is quite flashy, and the lithium battery is not recyclable. If it is worn out, it can only be thrown away, or it can be buried somewhere. After thousands of years, later generations will dig it. It's an antique when it comes out. The most important problem is that lithium batteries have a fire and explosion safety hazard, especially when consumers are deceived by profiteers without their knowledge to buy low-quality lithium batteries. The sealing conditions in electric vehicles are not very good, and they are easy to be exposed to moisture. Poor and other reasons may cause potential safety hazards.　　Through the above introduction, I believe that everyone has a certain understanding of which is better for lead-acid batteries and lithium batteries, and I hope that you can choose the right battery according to your needs. Previous: How do I charge a newly purchased electric vehicle battery?