I am on a boat, I have 2 quattros charging by a 11kva generator. The battery bank is 1800A lifeline AGM. When I start it up at say 68% usually they go straight into absorption mode rarely into Bulk. It starts with an output of 400A if in bulk it will stay there 395A+-. But it drops out of bulk within 5/10 mins. In absorption it drops very quickly, after 30 mins output is 160+- A, and 75%. After 1.5 hours or will be around 79/80% charged and the output will be down to 110A. The point of these batteries is that they should have a high charge, and like this I'm having to charge too often which is not good for them. Please can someone help. I have tried to contact Victron but had no luck so far. The installer has left the boat yard and his replacement does not have the experience to help, I have been on what's app and team viewer for hours with him last year.