Marine Electrical Systems USCG Question #1024 (Set 35)

Why must caution be exercised during the charging of lead-acid storage batteries?

Official USCG Answer & Rule Citation

Correct Answer: Option C — hydrogen gas is being continuously liberated

Electrolysis during charging splits water into hydrogen and oxygen. Continuous generation of hydrogen gas creates an explosive atmosphere in battery lockers, requiring continuous ventilation and strict adherence to safety precautions per IEEE 45.

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