Marine Electrical Systems USCG Q#218 (Set 8)

When charging, which of the following represents the recommended maximum allowable temperature for electrolyte in a lead-acid battery?

Official USCG Answer & Rule Citation

Correct Answer: Option B — 110°F

Operating lead-acid batteries above 110°F during charging accelerates grid corrosion, active material shedding, and plate warping. Thermal management is critical to prevent destructive thermal runaway on shipboard charging systems.

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