I know we can just wait and find out but can anyone guess what the % increase will be on battery life?

Is it a simple 1550 / 1100 ahm = 40% increase for the slim battery? (isn't the slim 1100?)

And with the extended 2400 / 1700 ahm = 70% increase? (isn't the thick battery 1700?)

Or is it more complicated than that?