There are many kinds of lithium batteries for electric vehicles. Generally, they are divided into three yuan 18650 and soft pack big three yuan. Iron lithium is rarely used now. Before the soft pack of the big three yuan, there were more super-powers, but it was used to decay quickly on the electric motorcycle. Now, Weiwei also has a car-grade 18650-power lithium battery. The price is relatively good and the performance remains to be seen. Tianneng 18650 is a capacity type, not suitable for long-term high current, but the life is still acceptable, and the price is slightly lower. At present, the main types of traditional battery manufacturers are mainly these. If you don't know about lithium batteries, it is not recommended to use other assembled batteries, especially used lithium batteries. The water is too deep and the safety is not guaranteed. If the new lead-acid battery is super-powered or can be used, the performance is guaranteed. In the later stage, it can be replaced with a new one. The lithium battery has no recycling value. The new Chaowei and Tianneng lithium batteries are more than three times the price of the same brand and the same capacity lead-acid battery, which can be used as a reference. Endurance comparison, new battery, because the lithium battery is lighter, the push-to-weight ratio is larger, in theory, the battery life will be a little farther. Actually, due to the performance of the battery core and the protection board design, it may not be as good as lead-acid, especially the capacity type lithium battery. At the end, in order to maintain output power, an increase in current causes the protection board to move in advance. Now the obvious advantage is that the car is light and the speed will be better. Then the general lithium battery can be removed and charged indoors (unsafe), which solves the big problem of users without fixed charging piles. If you just go to work, there is a fixed charging location, no doubt the lead-acid battery is more cost-effective.