Lead-acid batteries are safer.
1. Lead-acid batteries use stable lead and sulfuric acid as the main components. They have relatively stable chemical properties and are not subject to chemical reactions. Only in extreme cases such as overcharge, overdischarge, short circuit, etc. explosion or fire may occur, so safety is relatively high. In addition, lead-acid batteries have strong temperature adaptability and can operate normally in a wide temperature range. Their performance is relatively stable at high temperatures and they are not subject to thermal runaway. However, lead-acid batteries are large in size, have low energy density, have a relatively short lifespan, require regular maintenance and replacement, and can easily pollute the environment.
2. The batteriesithium use lithium metal or lithium alloy as the negative electrode material, which has the advantages of high energy density and light weight. However, the chemical properties of lithium metal are relatively active and can easily react with water or air, which poses certain safety risks. Lithium batteries are prone to short circuits when overcharged, overdischarged or subjected to external forces, causing serious safety accidents such as fires and explosions. Additionally, lithium batteries have high temperature requirements for the environment in which they are used. Their performance is unstable at high temperatures and they are prone to thermal runaway, which can lead to safety accidents. However, lithium batteries have a relatively long lifespan, do not require regular maintenanceand have good environmental performance.