Battery Hydrogen Gas Explosion

Battery explosions can occur due to pressure created by hydrogen and oxygen gases produced during charging of a lead acid battery.
Battery hydrogen gas explosion. The ventilation system can exchange an adequate amount of fresh air for the number of batteries being charged. Hydrogen is not toxic but at high concentrations is a highly explosive gas. At this concentration all it takes is a source of ignition to cause an explosion. The 100 lel concentration for hydrogen is 4 0 by volume.
When batteries are being recharged they generate hydrogen gas that is explosive in certain concentrations in air explosive limits are 4 1 to 72 percent hydrogen in air. An unsafe condition may be created when a battery cell has a high concentration of hydrogen and gas due to a plugged or defective vent cap. The 100 lel concentration for hydrogen is 4 0 by volume.