Traveling with a Residential Fridge?
So we currently have an RV fridge that runs on propane when we are traveling. A lot of the new RV's offer the residential style fridge or the RV style. My questions: How do you keep the residenti...
Forum Discussion
The tow vehicle alternator and wiring and towed RV wiring first supply power to the RV house which includes an inverter for a res refer. Any excess power will charge the RV batteries.
But the alternator is designed to charge the tow vehicle batteries and has no concept of a remote RV battery and it's charging requirements which is just a load to the alternator. Typically the tow battery quickly drops from bulk to float (13.4V), then add the wiring losses to the RV with loads and there may be limited RV battery charging.
If your RV battery is charged then great but that is not the case for some. A few tenths of voltage drop in the wiring matter in 12V charging. Some have added much larger wires and connectors (battery to battery). Another solution is a DC to DC booster in the RV that takes the lower incoming voltage and boosts it to charge the battery.
But the alternator is designed to charge the tow vehicle batteries and has no concept of a remote RV battery and it's charging requirements which is just a load to the alternator. Typically the tow battery quickly drops from bulk to float (13.4V), then add the wiring losses to the RV with loads and there may be limited RV battery charging.
If your RV battery is charged then great but that is not the case for some. A few tenths of voltage drop in the wiring matter in 12V charging. Some have added much larger wires and connectors (battery to battery). Another solution is a DC to DC booster in the RV that takes the lower incoming voltage and boosts it to charge the battery.
