I think very few on here can or want to coddle batteries to the point of eeking out maximum lifespan, if your investing many thousands of dollars into a big battery bank of top grade lifeline agm's like on a big boat or remote cabin then of course you'd want to coddle them dearly and never abuse em, spending the money on bigger chargers and keeping everything ideal to get a few more years out of your investment will pay off.. great for those people are relying on em for daily use and trying to hit maximum cycles w/minimal performance loss..
however for recreational use, not living off of you kinda want to do some recreating and not babysitting battery banks, burning fuel and taking night classes in battery chemistry and electrical engineering.. then when your not out adventuring your carrying on with the rest of your life and not thinking about your battery bank parked in the back yard.. the chance for abuse, neglect, and just apathy is high.. so you end up with decisions like, do I wanna spend alot more money and MAYBE get a few extra seasons if nothing ever bad happens and I keep ontop of this for the next 5 years like a fulltimer.. or do you wanna just get the best performance you can for the money and least effort? IMHO Your better off with more capacity of cheap batteries than you are with less capacity of expensive batteries if the costs are the same because with more capacity they suffer less abuse.. on the other side your also likely better off with a cheaper FLA bank at 1/3rd the cost or less that you can go >3x as long with the same money if your not gaining any extra lifespan when a bit of abuse is just naturally baked into your weight/space limitations and you cant carry excess capacity.. when being a part time nomad its takes a whole lot of effort and discipline to reap the rewards AGM offers, I suspect few are up to the challenge..
For small single or dual battery banks two top of the line (LifeLine) 100AH AGM's are already 80% the way to a single 100AH LiFePo4 that has nearly the same usable capacity and will charge in half the time at 40A than AGM will at at its recommended minimum of 80A.. there's not a whole lot of compelling arguments for AGMs for Expo/Overlanding/Camping in the first place once you factor in costs of coddling em and anxiety about abusing em.
just my $0.02 on AGM's and having to pamper em just because they cost more and give you nothing else in return.
