PD 9260 how long to charge?

AFAIK (not much) if the PD goes to 14.4 by itself at the start of the recharge, it will stay at that for the time it takes to get the batts to about 97% then drop to 13.6, even if that time is less than four hours, say three hours.

Even if the PD converter measured output voltage and/or current (which it doesn't) to determine SOC, how would it know if its power was going into the battery or running DC loads in the RV? Without measuring voltage and current at the battery it is clueless as to the battery's SOC. It's all timer-based for a particular example battery of an assumed size, assumed SOC, and assumed temperature. If you're not running the generator for more than a few hours, and it's not obnoxiously hot, my algorithm is to run in boost mode whenever the generator is running.