Hi :) It might seems a stupid question but I can't find any answer for it ^^ I have a question: how voltage is calculated in a battery? Let's say you create a battery with - 1 C of charge of electrons on the and the other side + 1 C of charge, could you tell me what is the voltage of this battery? According to Coulombs law the force F needed is (kQ1Q2)/distance² If we keep this track the potential energy W = F X distance which will give us kQ1Q2/distance, so voltage is still distance dependent, right? Is it calculated from a mean distance between the two terminals (like the middle of each cell?) Thanks for your help!