From: theise@panix.com   
      
   On Tue, 4 Mar 2025 14:20:47 -0000 (UTC),   
     Ted Heise  wrote:   
   >  On Mon, 3 Mar 2025 21:44:52 -0600,   
   >    sticks  wrote:   
      
   > >       ...Seems to me the little juice those fridges pull you'd   
   > >  be better off just using the trailer battery and figuring out   
   > >  how to keep it charged up.   
   >   
   >  I would also think the fridge (Norcold N4000) has light   
   >  electrical use, but the 100 Ah LIon battery is down to 80 or   
   >  less after a half day of towing.  I can't think of much else in   
   >  the unit that draws meaningful power while towing.   
   >   
   >  If I'm reading things right (from web searches), it seems the   
   >  fridge should run at somewhere in the 50-100 W range.   
   >  Assuming worst case 100 W for five hours, I think that's 6 Ah   
   >  used, so the battery should not be getting drawn down as much   
   >  as I'm seeing.  Maybe my calculations are off base.   
   >   
   >  On the other hand, I seem to recall that the fridge has stopped   
   >  running after a modest (less than an hour) time on the 12 V   
   >  system.  I suppose I need to check this out further.   
      
   So I looked at the manual for the fridge, and it clearly states it   
   only runs on 12 V if the trailer is connected to a running tow   
   vehicle.  I guess the next step in better understanding the issue   
   would be to hook up the trailer and check the battery status while   
   the fridge is running on 12 V.   
      
      
   >  Regardless, it seems pretty clear my Acadia tow vehicle is not   
   >  producing enough juice to help.   
      
   If I want to look into getting a DC-DC charger and cable to back   
   of my Acadia installed, where would I start--is that a GMC dealer   
   thing, or an RV shop?  Other?   
      
   --   
   Ted Heise             West Lafayette, IN, USA   
      
   --- SoupGate-DOS v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)