Agreed, do we know the cell volume is decreased by 60% or just the housing/battery pack? Not disputing, just asking!
I am basing this on a low-res pic of a section through both a AFN and an AFN2 which showed 5 batteries in the former and 2 batteries in the latter. They looked identical in shape and size and only the amount installed differed.
I wish I could find the damn jpeg as a few people have asked what the inside of the beacon looks like!