Re: Question about HP-IL Printer Message #6 Posted by Dave Shaffer (Arizona) on 17 Sept 2009, 6:37 p.m., in response to message #4 by P.Hart
Quote: how to decide which are the correct + and - terminals for a set of D batteries?
If you look carefully, one end or the other should have aplus or minus sign.
In general, though, for AA, AAA, C, and D cells, the raised button end is the positive end, and the flat end is the negative end.
(What happened to A and B? Maybe B was too confusing with what was known once upon a time as a B battery - the high voltage (often 60-90 volts if I recall correctly) plate supply battery for radios in the 20s-30s-40s)
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