Thank you BFL13 For the chart. I don't need to know why that line is curved. Or why the higher current steps down at a lower percentage of state of charge. I just need to know what will work best. It looks like I can upgrade to a 55, 60, or 75 amp charger converter and keep my run time down to a reasonable rate. I am sure that I will have to upgrade the wires between the charger and battery bank.
One more question. Can I use the wire from an old set of jumper cables that I have laying around? I am sure that it will take the amperage, but I am unsure about the thick insulation around the wires. Is there a spec that I should concern myself with for this type of wiring?