Ok, I got my wiring done and went to check output on the charger prior to hooking up. I have 2 chargers.
Boondocker 4 stage 60 amp and PD 9280 with the pendant. Both brand new for best converters.
The PD outputs 14.1 at the terminals in boost mode and the boondocker outputs 14.3. Both of these are exactly .3 volts under rated output so I have to assume the charger needs to see a load to go full output?
Incidentally, at the Batts I am seeing 13.9 with the PD and 14.2 with the boondocker.