I, for one, look forward to hearing ideas about this.

The fridge should not care where the heat used to boil the water/ammonia
solution comes from. A propane flame, 12V or 120V. The electrical heater
is a dual-voltage part, with both halves rated at 85 watts. Watts is
pretty much heat in a case like this, so 12V or 120V,  the performance
should be the same.

http://members.aol.com/Fkc43/fridge.htm

That's the reefer. I run both LP and 12V when I am driving -- my LP
flame does not blow out. But I've never seen a difference between LP or
12V alone when driving.

GoWesty's explanation, about charge rate issues. Hm, I have a problem
with that. As long as the battery is providing 12 volts or more, the
reefer should be heating and cooling fine. So I'd check to see if the
battery is providing the voltage. Make sure the battery is charged
(drive for a few hours). If the battery does not provide 12 volts when
the reefer is set to 12V (can't do that indefinitely, the reefer pulls 7
amps when on 12V, but a few hours, anyway) then either the battery is
not actually receiving a charge or it is a bad battery.

--

Mike "Rocket J Squirrel" Elliott
71 Type 2: the Wonderbus
84 Westfalia: Mellow Yellow ("The Electrical Banana")
Carlsbad, CA
KG6RCR

On 7/18/2005 12:08 PM Chuck Reisinger wrote:

> My Frig isn't doing so well running on 12v when underway..... thought
> in theory -  that you could run the frig while underway or parked for
> 1-2 hours....changng over to propane when stopped for longer periods or
> for the night.....  new batteries and frig update  completed by
> GoWesty.....talked with Chris at GW...he told me the aux battery
> doesn't charge at the same rate as the main....I didn't know
> this.....he suggested just staying on propane....btw:  frig works like
> a champ on 110....
>
> So....is the 12v frig feature a WASTE?  Is there anything that can be
> done to resolve this?
>
> Would installing a new alt help?
>
> Thanks much
>