Rogers provided a galvanic battery that eliminated the danger of acid spills.
From the en.wikipedia.org
The cable held very hard, and when it surged over, the windlass sent the men flying about the deck, as if a galvanic battery had been applied to their hands.
From the en.wikipedia.org
Additionally, Wylie began to experiment with photography soon after the daguerreotype process was invented in 1839, and held patents including ones for a galvanic cell battery.
From the en.wikipedia.org
In a battery or galvanic cell, the anode is the negative electrode from which electrons flow out towards the external part of the circuit.