Well I think what you might have not understood is that regular AA akaline batterys are 1.5v like Sky said thats why I asked. If you go to a 5 cell reciver pack you will still get 6v because NiMh and NiCd are 1.2v a cell so you need the 5th cell to makeup the 1.2v you loose over the 4 1.2 cells
1.2x5=6
1.5X4=6
The reason you see 4.8 is when people run 1.2NiCd or NiMh AA cells then they only have 4X1.2=4.8
That should clear up any of your questions. X