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toewsrus's avatar
toewsrus
Explorer
Dec 10, 2014

Charging systems

Hi I have a 97 Pace Arrow Vision. I'm pretty new to RVing and am not quite sure what to expect from the charging systems.

I used to own a boat and had it set up so that when an engine ran it charged the starting battery and the house batteries. Also when the sun shined the solar panels did the same. It utilized some relays etc. to accomplish all that.

I have a few of those same relays in the RV, but don't have adequate schematics to see how the couple up the batteries, or even if they do. Before I spend time tracing where everything goes, I thought I'd check here first.

What should I expect from the charging systems?
If the Genset is running, should it charge both the house batteries and the starting battery?
If the engine is running, should it charge both the starting battery and the house batteries?
If plugged in to the 30amp outlet, should it charge both the house batteries and the starting battery?

Thanks in advance for your input!

2 Replies

  • As per Old-Biscuit's post it's going to depend on the controller for your charge solenoid, also known as isolation relay or aux start solenoid. Quick test is with a volt meter measuring battery voltage. When charging you'll see 13.2 VDC or more at a battery. When using the generator or shore power you would expect to see that level at the coach batteries and if the charge solenoid closes you'll find that level also at the chassis battery. Same for the engine alternator but chassis first then coach battery.

    My Battery Control Center is the controller but will not tie the two batteries together until the primary battery (coach when using shore/battery power, chassis when the engine is running) until it senses a full charge. It will also disconnect the batteries if it senses a discharge to prevent both batteries from going flat. So it's possible yours could do the same.
  • IF set up with 'charge solenoid' it will.

    That's where tracing your system comes in handy.......you know how yours is wired.


    One way