What you really want is about 13.8v-14.0V AT THE RV BATTERY TERMINALS, but you have no way to control this ! The vehicle voltage regulator is "sensing" voltage far from those batteries. If you had an alternator with an externally adjustable regulator, you could crank it up to the desired voltage, but the battery in the vehicle would probably be seeing close to 15.0V and it will be boiled dry.
Thats the thing. With the truck running and all batts full anyload comes right off the alternator. The battery itself was only getting .3 amps when I had the 2.3 amps as shown in the pic above..
I would need to test when the batts are at 50%. Test the amps through anderson to RV batts, and test amps going into truck aux batt.
IMO should it split and what the batts want? Like 60 amps to RV batts and 20 amps to truck batt?
After a night of camping with all 3 hooked up I assume all 3 batt voltages should be the same. Say, 12.5 in am for example?
