Hi All, aside from the obvious reduction in amp/hrs. what would be the disadvantage of going from 8D to 4D. Marathon tech claims all their new coaches are equipped with 4D. Physical size/weight was not the reason. He was hard to follow but, claims there is little difference in performance. When comparing 4D to 8D on Lifeline's chart, there is a real reduction both in 'Rated cap.' and Minutes of discharge.

Any thoughts?

Larry