How to find out if motor charges house batteries

[New Hobby]

How or who do I ask if my alt charges my house batteries?

[KIX]

Unplug from shore power and gen off...........wait about 1/2 hour, then check voltage in ytour battery banks using a volt meter. Note the voltages. Then start and idle the main engine and check voltages again. With engine off you should read about 12.5 vots....with engine running you should read around 13.5 volts. If it's reading 13.5 or so with engine running then that battery bank is being charged by alternator on engine.

[tompen]

No volt meter you say.......Unplug from shore power and turn on coach lights. A bunch of them. Wait a few minutes. This will pull the surface charge off. Leave the lights on and, while watching the lights, start the engine. If the lights get brighter, than the coach batteries are charged by the alternator. Better with a volt meter, but this is a quick test.

[Monkey Run]

Sounds as though you have the same issue I have, only situation reversed. Just purchased a two bank charger for my coach batteries as the inverter/charger on mine charges only the house. Engine running they all get charged.

[Mahakal]

Hello,
I also have reserved issue. House battery charged with shore power chassis are completely dead.

[Old Bounder]

Originally Posted by New Hobby

How or who do I ask if my alt charges my house batteries?

First you tell us what year, make and model your motorhome is.

[Old Bounder]

Originally Posted by Monkey Run

Sounds as though you have the same issue I have, only situation reversed. Just purchased a two bank charger for my coach batteries as the inverter/charger on mine charges only the house. Engine running they all get charged.

Monkey Run, what RV do you have?

["007"]

Mahakal, you have a BIRD System to charge all your batteries while driving connected to shore power or Gen running.
This will explain your Bird sys. and this will show all fuse locations and wiring in your Newmar.
Here is a Brochure and Owners Guide for your coach.
In my signature below are three links with more info for your Newmar.
CHECK out the Newmar forum.

[New Hobby]

Originally Posted by Monkey Run

Sounds as though you have the same issue I have, only situation reversed. Just purchased a two bank charger for my coach batteries as the inverter/charger on mine charges only the house. Engine running they all get charged.

This would be helpful info for me also.
2014 Thor Hurricane 34J.

[New Hobby]

I would also like to thank you all for the great answers I hope to one day help others as you have helped me

[Mahakal]

Thanks 007.

[New Hobby]

My coach batteries do get charged from the alt of the motor.

[Ray,IN]

FWIW, the senior technician at Camping World of Indianapolis told me he's never seen a Class A MH that did not come equipped to charge the house batteries from the chassis engine.

[ImagineIF]

Originally Posted by Ray,IN

FWIW, the senior technician at Camping World of Indianapolis told me he's never seen a Class A MH that did not come equipped to charge the house batteries from the chassis engine.

Then he didn't see a lot of Monaco products, and I bet others. I discovered on Monaco forums that my Monaco built Beaver had a BIRD while similiar Monaco badged Class As did not. This surprised me too.