Why do Giant electric vehicles use lithium batteries?

Giant electric vehicles are all being replaced by lithium batteries. Lithium batteries are small in size, light in weight, high in energy density, fast in charging and large in discharge current. According to relevant information, lithium batteries have many advantages over lead-acid batteries. Lithium batteries are small in size, light in weight and large in capacity. Lithium batteries are relatively expensive and less safe than lead-acid batteries.