Mine (EPever) will do up to 17VDC for up to 180 minutes, every 28th day of the month. But I'm too chicken to boil them that much.
So I use the canned program for flooded LA, which is 14.8v for 120 minutes.
Considering these batteries are over 10 years old, and for all but the last 6 months never saw more than 13.6v from my WFCO, I would say they have done pretty good with no TLC whatsoever. They are using a lot more water now with the solar controller doing the charging and the converter turned off. I don't feel compelled to do anything extreme in an attempt to eek out more life, from these, or the next set. And I recognize that I am on borrowed time with these.
These are Interstate not Trojan.
