and my point is that unless you get VERY lucky the cells will be low enough from flying that when you lose one cell you will have insufficient voltage left.

But hey, what do I know. I only service Ni-Cad batteries for full scale jets, you know DC-10 and Airbus's and the like. $100 or more per cell and 21-22 cells per assembly. Ands we scrap cells on a regular basis.