Electric potential is the potential energy of a charged particle in a point in space relative to another point in space in an electric field, all that divided by the charge of that particle. I don't understand how it relates to the voltage in a circuit and battery? To have a potential there must have a field...
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A battery stores an electrochemcial potential. https://en.wikipedia.org/wiki/Voltage
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\$\begingroup\$ Gonna add a link to the battery's "Principle of Operation": en.wikipedia.org/wiki/… \$\endgroup\$ Commented Oct 12, 2016 at 21:27