In testing a wet battery it is decidedly more reliable to employ a liydrometer instead of a voltmeter, A cell may show a high voltage when it is more than half discharged,
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https://paperspast.natlib.govt.nz/periodicals/RADREC19271209.2.14
Bibliographic details
Radio Record, Volume I, Issue 21, 9 December 1927, Page 3
Word Count
32Untitled Radio Record, Volume I, Issue 21, 9 December 1927, Page 3
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