Hazards of lead acid battery-Emission of harmful gases

Lead acid batteries are the most common large-capacity rechargeable batteries. It is very popular among general consumers because of its high dependability and affordability, which makes it a vital source of electrical power for homes, offices, automobiles, industrial forklifts, electric vehicle, and even a submarines. These batteries are almost 100% recyclable. Lead acid batteries contain chemically active components, like lead & dilute sulphuric acid. During normal battery charge discharge process, battery emits Hydrogen, Hydrogen Sulphide, Arsenic Hydride and Antimony Hydride gases. Although the levels of Hydrogen, Hydrogen Sulphide, Arsenic Hydride and Antimony Hydride remains well below the occupational exposure limits, they are simply a reminder to provide ample ventilation. Hydrogen is also produced at a very minimal level if battery is charged correctly, but because of its small molecular size, hydrogen can leak from spaces through which other gases cannot pass. Hydrogen is flammable and can become explosive if concentration of the gas in the air is equal or above 4%, which can be mostly achieved if batteries are charged in a sealed room or an area with poor ventilation.

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