I notice that electric vehicle batteries (such as the one in the Tesla) are made of a bahzillion little batteries. I also notice that electric vehicle batteries seem to be absurdly expensive. A small battery is made of a case, some metals and chemicals. Can they not scale up this process and make one big battery for cheap? Let me know what I'm missing? I realize it it may not be as simple as making two giant electrodes, but even if you need many smaller electrodes, why cannot they pre-fab the metal parts, then lower it into the pre-fabbed container and then pour in the chemicals. Yes I'm oversimplifying but you get the picture. One big battery coming of the assembly line every second at a cost of several hundred bux. An analogy is a microchip. They don't make thousands of transistors and then pay people with microscopes to assemble the darn things, they try (as best as they can) to make the whole thing in as few steps as possible. It's the oil companies sabotaging the process right?