Not entirely related to the question, but I too, for the second time since 2021, emailed Ryan at Sun Forge to verify settings on my new LIFELINE 6 volt GPL-4CT AGMs (x4).
Ryan not only sent me his suggestions in one day (over the weekend), but also suggested, from his (and their) many years of experience, to set these up for equalization. So I did.
He said many or enable the equalization on these particular AGMs are getting 10-12 years of life out of the batteries. He has one customer who equalizes daily, only for a short time (.05H/100AH) who is now on year 13. Wow.
The #4 DIP switch is a bit challenging to get to, but I managed to flip it to "ON".
I don't expect to have this same trailer that long, and if I do, I will "likely", and eventually move up to Lithium. But, for now, my lifestyle in the camper does not require that much power, but it might some day.
OTT had changed out my batteries when I was there in July for other service. My crappy ones died and did not want to rush into Lithiums by myself.
Cudos to Ryan!!!