Your function M.Unom(V.bat) makes use of V.in and V.in is a range (not a vector). The way you use it it has to be a single scalar.
Always setup all your calculations for single scalar values and make them functions in the variable you'd like to vary later.
After you have defined all your calculations, you define a vector (not a range) for all those variable values and call your function with this range as argument. Don't forget to vectorize (the arrow over the expression) that function call.
Because of the vectorization used it seems to be necessary to define a separate auxiliary function to get access to the n-th element of the result vector of the solve block function. As an alternative you may also turn U.ADC into a function.
MC15 worksheet attached
BTW, there is still an open question of yours which you did not came back to
