Hello. I have an RV with a standard lead acid battery connected to the alternator, which is then connected to a Cyrix-Li-Ct. The Cyrix-Li-Ct is then connected by about 15 ft of 2 gauge wire to the house battery, which is a Renogy 100ah LiFePO4. I'm trying to diagnose why the house battery never seems to charge from the Cyrix-Li-Ct. The voltage from the starter battery seem to be in line with the spec sheet when the alternator is running and I have a ground wire ran back to the starter battery on the 86 Bat terminal. I've verified that the house battery has a proper ground to the system. Are there any additional troubleshooting tips that I can try? Thanks!