Answer :
Automotive batteries are example of class 9 hazardous materials which is very most hazardous among all.
There is not a big risk of fire from a lithium-ion battery, the risk is still there. The liquid electrolytes found in traditional lithium-ion batteries are flammable, but the solid-state electrolytes have the notable benefit of being non-flammable. Thus, solid-state batteries have a lower risk of catching fire. Gases released when batteries are charging hydrogen which is very flammable and easily ignited and oxygen which supports combustion can result in an explosion. The acid used as an electrolyte in batteries is also very corrosive and can cause injuries if it comes into contact with workers."
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Automotive batteries are examples of secondary lead-acid batteries used to supply the high current required for starting automobile engines, consisting of multiple cells in series with lead oxide and lead plates in sulfuric acid.
Automotive batteries, specifically lead-acid batteries, are an example of secondary batteries that are widely used in the automotive industry. These batteries have the capability to produce a high current, which is necessary for starting automobile engines. The lead-acid battery consists of multiple cells connected in series, with each cell containing a cathode connected to a lead oxide plate and an anode connected to a lead plate, both of which are immersed in sulfuric acid. The electrochemical reactions within the cells enable these batteries to store and supply electrical energy.
Car and marine engines rely heavily on the lead-acid battery for starting power. The total voltage generated by lead-acid batteries is the potential per cell multiplied by the number of cells, providing the necessary energy to start the engine's motor. While ideal for automotive use because of their current capacity and cost-effectiveness, their weight and size make them impractical for smaller electronic devices like smartphones.
