I just picked up 16 Valance batteries from a battery recycler for free. 3 had green flashing lights, 4 with battery low red lights and the rest had no indication at all.
was able to restore the 4 low battery to complete charge as well as 4 of the other non charged units back to full state...
I have charged several valance batteries using the agm setting and had no issues.
I also think I saw on there website you can charge them using agm chargers with no problems. I’ll see if I can find that information
I’m going to use Nissan Leaf batteries for a home I’m building just outside San Antonio Texas.
Will use mppt solar hybrid controller. Still working out the details.