I cant get the Ionic to charge 8 cells,I set it to nimh2,then select 1 amp as im charging transmitter aa batteries,then I go to pick the number of cells and it skips from 7 cell to 4 cell,tried it a million times.This thing just came back from Novak as a refurb. ,I got it from someone who just got it back.Will it hurt charging my transmitter pack on the 7 cell setting?