Salvo, If I trusted plug and play solar setpoints or some converter to allow me to go outside and play, my 160$ battery would be a block of recycled lead right now.
But I'm not sitting there fretting about my SG. I figured out what my battery wants and needs to perform well, and there was nothing plug and play originally, about it.
Now I hammer the battery nightly, let the solar do its thing daily, and every two weeks or so I move a switch, press a few buttons to allow 16v, looks at a few digital displays, float a bobber, and call it macaroni.
8 years, bah, talk cycles, months holding batteries in float mean nothing. If batteries in an RV are lasting 8 years they are obviously not being cycled much, or deeply when they are.
But you have fulfilled the obligatory "why worry about it?" post. This needs to be done every so often while these threads go on and on by those of us interested in top charging and maximum cycle life from what is basically ancient technology.
I spend more time reading about it and typing about it than I actually do on performing the top charge, by a factor of 10 or so.