Thank you all, yes my Sterling charger is set for AGM. It’s another thing I need to get to, checking if I can refine the charging profile based on Continental’s recommendations. The 4 AGMs were around $1700 in 12/2023.. 8V @170AH. Not sure how much they are these days. I will probably look at getting Trojans next time.. easier to find and lots of charging profiles posted online.