well... it doesnt matter what you compare them too,,, thats like compariong label numbers with trinity packs and fantom..
As long as you do all your packs on the same charger.. "its called a base line"
from what i have sean all eagle charger,, "as long as they are the same model, are quite consistent...
the cdc version 5 has atleast .6 volt higher than version 6 numbers