Why must batteries be charged in a well-ventilated area?

Charging batteries, particularly lead-acid batteries commonly used in forklifts, produces hydrogen gas as a byproduct. This gas can accumulate and create an explosive environment if not ventilated properly. Ensuring that batteries are charged in a well-ventilated area allows these potentially explosive gases to dissipate safely into the atmosphere, reducing the risk of a fire or explosion.

While overheating, charging time, and chemical corrosion are valid concerns in battery maintenance, they do not directly address the critical safety issue of gas buildup. Proper ventilation specifically mitigates the hazards related to the release of explosive gases, making it an essential practice in battery maintenance and charging procedures.