I would like to ad a couple of comments, if I may. First, I am neither a battery
expert nor an electrical
expert. And, the batteries have only been in place for 1 year and we won't actually move on the boat and start cruising until later this year, so no full time cruising yet. We charge off of standard engine
alternators, an 80a Dolphin charger
and a solar array of three 135w Kyoceras. The array easily takes the house bank up to 100% and I haven't spent any time catalogging the charge performance because, hey, I see 100% on the monitor
regularly so not into the exercise, but that may change as we move onboard and increase the daily draw.
I installed a house bank of 5 Odyssey 2250s and 2 of the Sears Platinums for engine
starts. I wanted the larger Odysseys for the house bank and the Sears Platinums didn't come that large. I went with the Platinums for start batteries as I understood they were "Odyssey's in disguise", less $$$ and wanted to maintain the same chemistry and battery age in the charging system.
Anyway, I thought your initial question on this thread was that you were looking for comparable information on non-Odyssey AGM
batteries in order to see if there really was an improved charging rates for the Odysseys. While I can't help you find the information you seek, I may be able to add a clue that I haven't seen in this thread so far (or maybe I missed it; my eyes glaze over when I read long technical posts).
My rudimentary understanding of the charge rate process is essentially the charging source is trying to force electrons into a lead plate. The thicker the plate, the more difficult time the electrons have getting to the center of the plate. So apparently, the outer surface of the plate charges first and the inner core
of the plate charges last and the electrons have to work harder to get there, hence the slowdown of the charge rate as the charging process approaches 100%.
The main feature of the Odyssey (and maybe other AGM's, haven't researched them) is the TPPL or thin plate, pure lead construction. Ribbon lead instead of plate lead is used in the Odysseys that results in a shallower thickness for the electrons to penetrate per ostensibly the same amount of lead as a lead plate battery. This supposedly allows for the faster charge rate in the Odysseys over thicker plate batteries. So I would think that the answer to your original question about other AGMs might possibly lie in whether or not the TPPL construction is used.
Hope this is helpful. Like I said, I can't really converse in electricalese, so this is just my plain George attempt.
OTOH, maybe I fell victim to the marketting...... at the very least, I am willing to just admit that Nigel is smarter than I am and, since I can't be an expert on everything on the boat, I am willing to outsource to him as much as anyone.
Good luck with your research
and I look forward to reading your results and experiences. Kirk