Why Most Car Batteries Are Lead-Acid Type

2021-08-11 17:56:32

As the starting power source of automobiles, lead-acid batteries have always been occupied a crucial position in this field. Some people wonder can lead-acid batteries be replaced with lithium batteries? In fact, from a technical perspective, it is feasible to use a lithium-ion battery as the starting power of the electric car. But at present, using lead-acid car batteries is still favored by those making the latest generation of electric cars. In this article, we will analyze the reason why people prefer to choose lead-acid car batteries.

1. Battery performance

Compared with lead-acid car batteries, lithium batteries have weaker low-temperature performance and high-current performance, which is unfavorable for starting the power supply. The discharge performance of lead-acid batteries can cope with more harsh environments, whereas lithium batteries cannot be used in low temperature areas. In addition to low temperatures, the high temperature of 60 to 70 degrees in the engine compartment can easily scrap lithium electronics. In terms of high current performance, the instantaneous current is mostly above 200A when the car starts, and the performance of the lithium battery will drop rapidly at high magnification.

2. Technology Cost

Lead-acid car batteries are cheaper than lithium batteries, which is the decisive reason for their popularity. With the same capacity, the fabricating technique of lead-acid batteries is more mature. Moreover, lead-acid battery has low requirements on electrode materials, electrolyte, and assembly environment. On the contrary, the fabricating technique of the lithium battery process is complicated, and it needs great control on humidity and accuracy. Therefore, a lithium-ion battery is more difficult to popularize than a lead-acid car battery because of its sophisticated manufacturing process.
Tiger Head Lead Acid Car Battery Europe Standard vs Japan Standard

3. Safety

Lithium batteries are inferior to lead-acid batteries in terms of safety. The heat released at the start of the power supply puts the car in a dangerous situation. It is also mentioned above that lithium batteries are prone to scrapping and catching fire at high temperatures. Lead-acid batteries have good high-current performance, and the materials are not flammable in the event of danger. On the contrary, the raw material of lithium batteries is graphite, thus the flammability of lithium batteries is high.

4. Battery life

If you need to use the car frequently, the lithium battery will passively stay in a fully charged state for a long time, and this will affect the battery life. For electric vehicles, there are clear parameter requirements on speed and endurance. Under this parameter setting, an affordable lead-acid battery is sufficient to meet the demand.