The main problem is that the car should start the battery, because some lead-acid batteries are now used as power batteries. It is a consensus to replace lithium-ion batteries. Although lithium-ion batteries have advantages over lead-acid batteries in terms of performance (such as energy density, high-current discharge, and longevity), one of the most important functions of starting batteries is to absorb the unstable voltage of the generator output. The capacitor acts as a voltage regulator. This lead-acid battery is more suitable than lithium-ion battery because it is overcharged. In addition, the lithium-ion battery needs to be equipped with a battery management system, otherwise there will be safety hazards, which also increases the cost of battery use. In addition, the price of lead-acid batteries is much lower than the price of lithium-ion batteries. Replacing lead-acid batteries with lithium-ion batteries can be 2-3 times higher or even higher replacement costs. Although the state does not advocate the use of lead-acid batteries, as a car company does not have the motivation to replace a mature component with a more expensive and less useful thing, but! Everything has one, but lead-acid batteries are bound to be eliminated. In the near future, perhaps lithium-ion batteries, or other types of batteries, or other technical solutions, such as electric vehicles, will replace lead-acid batteries. The wheel of history will eventually be crushed from the lead-acid battery!