A 6v nimh pack fully charged can go over 7v, so I guess it might make sense, but I never use one since I'd rather fly at 6.5v that 6.0 anyway. When the batteries go under 6v, (a) your batteriers are near dead, and (b) the regulator should just pass the low voltage through with a slight loss.

So I say what's the point?

It is staggering the number of people who buy stuff for their planes without either needing or understanding it.

TF