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On A 9-Volt Battery, Which Terminal Is Positive?
- May 15, 2018 -

On the 9v battery cable itself the solid smaller male contact is positive and the larger, female contact which has splits around the edge and accepts the smaller contact is negative.

This is of course confusing because on the appliance,  the situation is reversed because we have what is called a hermaphroditic (look it up) connector which is matable with itself and has both male and female features. On the appliance the male contact is negative.