Marine Electrical Systems USCG Q#234 (Set 8)

When troubleshooting an alkaline storage battery, what is the best way to locate a weak or dead cell?

Official USCG Answer & Rule Citation

Correct Answer: Option C — load testing each cell with a voltmeter

Because specific gravity does not change with state of charge in alkaline batteries, identifying a weak or dead cell requires performing an individual cell voltage drop test under an electrical load using a precise voltmeter.

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