I hope the revamp of this article may help those who are stuck trying to sort out problems in their 24v 90A system.
This is a major upgrade of the original article which now has 54 pages with 81 images. The entire project of research, writing, image manipulation and setting up the tests themselves is in the order of 400 hours work. So I hope it helps someone.
http://www.hmvf.co.uk/pdf/ALL%20CHAR...4%20ver3-2.pdf