I'm not sure you understand how DC circuits work. Below is a simplified schematic of your House DC system in your coach. This does not include any cross-over to the Chassis battery.
It is a simple parallel circuit so as long as the USE/STORE solenoid and main DC breaker are closed whatever voltage is measured across the battery (Point C) will also be measured at Points A and B.
So if the converter is OFF you should see battery voltage (12.1 to 12.8 VDC) at the output of the converter (the fuses).
If the converter is ON and producing 13.65 VDC as measured at Point A you should see that same voltage (or a couple of tenths less due to voltage drop in the wiring) at the battery (Point C)
If this is not the case then you have an open circuit between the battery and the converter.
The converter does not "see" battery voltage, it sees its own output voltage and how much current is flowing. Although it may be trying to put out 14.5 VDC at first, the lower battery voltage will drag it down to a lower number and maximum charging current will occur. As the battery charges its internal voltage rises and less current is flowing to charge the battery. The converter sees the lowered current flow and changes modes (charging voltage) to prevent overcharging and cooking the battery.
Thor Forums
