6/30 7:00 pm PDT
Due to the low voltage at the profile tower, we cobbled together a charging system for it.
Voltage at the inside of the power interface panel on profile was 9.9V.
Charging system consists of a 12VDC power supply (white rectangular cube), charge controller (didn't note which kind) and a battery, all in a white cooler. A second separate battery is also connected. Strung a new AC extension cord to this system. Left the cooler lid propped open. Will have to watch that this doesn't overheat.
Voltage a the profile power interface panel after adding the charger was 12.1 V.
Checked voltages at downwind1 charge controller:
J3 (DC in): 12.8V
J2 (to battery): 12.2V
J1 (load): 12.1V
At unused output from charger: 13.5 V.