[asdf38]

Stu, that's all right but previously you said this:
"Anyway, the answer to your question is that a bigger bank, twice the size, would have twice the time to go based on similar loads. That's all."

That's either contradicting the reasoning in the passage you just quoted, or it's confusing.

Again to the OP's question, he's right, doubling the capacity with either an additional cell or a larger cell results in a 10% "bonus" capacity because of this equation.