I set the Max Charge rate to 90%. The charger specifications say that it will only pump a maximum of 125 amps into the batteries, but when we pulled into port and plugged in yesterday, there were 132 amps going in. The max charge rate (C/5) of 600 amp hour batteries is about 120. Now, the amp meter function of the inverter/charger (without the BMK) is only accurate to within 20%. Plus the solar charger may have been pumping in some amps. But just in case I bumped it down and it dropped to a much more battery-life-friendly 114 amps.
[EDIT – back in May I set max charge back to 100%. Per the specs, the batteries can take up to 300 amps during bulk, so 132 should be fine]
Next, I need to reconfigure the solar charger to match the charge profile of the shore power charger, and get rid of the monthly “equalize” function, which I think might be death for AGMs…