USCG USCG Electrical
Set 5 • Question #131 of 142
Launch Interactive Practice Room A lead-acid battery is considered fully charged when the __________.
A
electrolyte gasses freely
B
battery charger ammeter indicates a positive reading
C
terminal voltage reaches a constant value at a given temperature
D
specific gravity of all cells reaches the correct value and no longer increases over a period of 1 to 4 hours
✓ Correct Answer
USCG NMC Regulatory Explanation
In USCG Marine Electrical Systems (IEEE 45 and 46 CFR), regarding 'A lead-acid battery is considered fully charged when the', the compliant technical standard is: 'specific gravity of all cells reaches the correct value and no longer increases over a period of 1 to 4 hours'.
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