[Potironette]

Err why does it matter that it's a single unit of negative electrical charge? Because that way it can be measured easily..? One electron is one unit?

So..a volt is how much stored up mechanical energy there is in an object (I looked at the units just now as ‎kg·m²·s⁻³·A⁻¹)?
Why potential? Why not kinetic? Is it because the particle is not moving freely within the object, but when it gets measured it is moving? (All I know is batteries and potatoes can have "voltage" measured with wires and multimeters, and the kg·m² makes me feel like it has to do with KE, since KE is kg. m2/s2).