Charging RV Batteries with GMC Truck 110V Outlet: Feasibility and Efficiency

[MCHAMMERTIME57]

Anyone have experience in utilizing the GMC 110 outlet for suppling power to the RV for battery charging.
I have. 2022 Montana 3231ck with solar flex and instead of installing a DC TO DC setup would like to use the trucks 110 outlet

 

[nickens]

Anyone have experience in utilizing the GMC 110 outlet for suppling power to the RV for battery charging.
I have. 2022 Montana 3231ck with solar flex and instead of installing a DC TO DC setup would like to use the trucks 110 outlet

How many watts does your 110V supply? Our truck has a 400W so that would be about 30A to the batteries but only about 3A of 110V.

You would need to cut a hole in the front of the FW and hook up a battery charger.
I'm planning on swapping out the 400W inverter and installing a 2500 pure sine inverter (with upgraded cables) in its place and wiring a 30A outlet in the truck bed. I will also be installing a 30A inlet on the back of the pin box and wire it to my hardwired 30A charger in the electrical bay.

This will enable me to run my residential fridge and either recharge batteries or run an AC while on the road.

 

[RMcNeal]

Using the 110 outlet from the truck would be very, very inefficient. You would essentially be inverting the truck's DC voltage to AC voltage at 110 volts, just to use a converter to turn it back into DC voltage for the RV batteries. You would probably lose 90% or more of the charging capacity in the conversion process. A DC-DC charger would go straight DC voltage from the truck to the RV. Much faster and little to no loss.

 

[nickens]

Using the 400W inverter maybe inefficient it's already installed and a lot cheaper for the cost of 14ga extension cord. versus a dcdc plus 30' of cable, Andersons, etc.

Where did you get that 90% power loss? Maybe 10-20% tops.

 

[DutchmenSport]

Doesn't make any sense to me. DC to DC makes better sense. However, if you have other uses for the inverter DC to AC in the truck, then it does make sense.

 

[nickens]

Doesn't make any sense to me. DC to DC makes better sense. However, if you have other uses for the inverter DC to AC in the truck, then it does make sense.

AC in bed: power tools, a chest freezer returning from fishing trips

Still wondering how you got that 90% loss...

 

[DutchmenSport]

AC in bed: power tools, a chest freezer returning from fishing trips

Still wondering how you got that 90% loss...

Ah! Yes! I see now. No ideas on the electric loss. But definitely understand keeping that chest freezer running on those fishing trips. Oh yea!

 

[rickybobby]

On my Chevy 3500 you have to have truck running to use outlet.