LEAD ACID PARADOX
So I was having a debate with someone on another forum.
He was charging his agm bank at night using off peak (no solar), then running his pip during the day. I explained that this was costing him money instead of saving it.
He strongly disagreed, explaining to me that agm was 100% efficient, if he put 100Ah in, he can get 100ah back out.
Knowing this to be false, I showed the math. I tried to find research to disprove the amps in vs amps out theory. But it seems this conversation is a first. I could not find anything one way or the other. Then by accident some time later I came across
this scientific study
See the highlighted areas below
If you operate your batteries between 100% and 80% SOC, then you will extract LESS THAN 50% of the energy put in to them.