Quote:
Originally Posted by cavie
Your CAR battery is called the Chassis battery. The battery near the gen is called the House battery. The WH uses 12 volts only for a control circuit from the house battery. The WH is powered by Gas and/or 120 volt Electric. Your converter will provide 12 volts to lighting and charge your House battery when hooked to shore power. I do not know if the Converter charges the chassis battery. But I do know the 12 volt control circuit should not drain the chassis battery because the WH is not on and using any voltage from the DC circuit.
Only one circuit breaker is involved here. That would be the one labeled WH. BUT the 120 volt electric is NOT in play here. Check fuses and breakers with with a multi-meter. Breakers are 120 volts AC. Fuses are 12 volts DC.
Pull the Chassis battery and have it Load Tested at an auto parts store before you waste a lot of time.
What made you start disconnecting wires? What wires did you disconnect? The WH does NOT use voltage from the Chassis battery.
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Thank you for the information. it's really helpfull.
The Chassis battery (labeled 04/2018) keep dying, I have to jump start it if I leave the RV for 2, 3 days. I finally remember when I bought it, the previous owner had the wire disconnected (in the red circle I drew on the picture. It has 3 wires). So I disconnected the connection, and the problem is gone.
Also, when the Chassis battery is dead, all house led lights are gone. But I still can start the generator (is the house battery help to start the gen?). After the Chassis battery is recharged, the lights are on again. That tell me, somehow all lights in the house are using the Chassis battery.