The real issue I think is the disappointment is when folks learn that shortened lifespan can be traced to an overly modest charge rate. Their Perfect-Plan goes up in smoke. POOF.
The answer to this is MORE not less AGM batteries. Adding 25% MORE ampacity while restricting discharge percentage will freakin' E-L-I-M-I-N-A-T-E recharging restrictions. 300 amp hours usable instead of 200 available keeps the cycling depth shallower. My massive 24 volt 3400 amphour FLOODED bank drifts seldom lower then 75% for a reason.
Maintaining an AGM minimum at 60% SOC instead of 50% almost eliminates the issue. 65% SOC totally eliminates the issue.
The same is absolutely true with wet batteries and drifting electrolyte density. It **** near eliminates the need for equalization.
I could never afford ten dollars per amp hour and I read things this way
"Pay $200,000.00 extra for our vehicle and enjoy double the fuel mileage"
There is no quandary in my life about comparing what I have to lithium chemistry. So why worry about it? Three dollars an amp hour I can afford.
The purchasing public has been filled with so much battery hogwash for so many years it is difficult near impossible to try and lead them on a different path.
When you see a sign on an engine starting battery FOR ENGINE STARTING PURPOSES ONLY. Not for powering accessories! That will be a benchmark. Battery rules are trendy they are not sharp cut off points. Abuse is a gradual curve.
"Bring the two sections of U239 together. You'll know when critical mass nears" This was the opening speech of my physics teacher. He was unforgiving.