After I added the new wire from the alternator to the battery
compartment I now get 14 volts at the aux battery after driving a while.
You may want to consider a similar wiring enhancement.

I did not include every detail in my original post, in an effort to keep
it out of book form. Before I added the wire I saw 14.2 at the
alternator but only 13 or so at the batteries even after a few hours of
driving. That was how I knew there was a wiring issue that I needed to
address.

Mark

B Feddish wrote:
>>> The bottom line of this is that the nightly draining of the aux battery
> by the Vitrifrigo brought to the fore an existing weakness in the charging
> path. Even driving for 4 or 5 hours in daylight did not sufficiently
> recharge the deeply drained battery. <<
>
> I discovered this REAL fast after installing the Vitrifrigo. I actually
> found that if I charged the aux battery then drove to a campsite while the
> fridge was on and the DVD player going the battery had LESS voltage than
> when I left. I now disconnect the AUX battery while driving when it's full.
> Driving a few hours does almost nothing in terms of recharging the AUX
> battery.
>
>
>.................
>
> Bryan
>