So many have left us.

https://www.hayworth-miller.com/obituaries/randall-randy-copple

I should put it in the other toyota groups also

7 minutes ago, WME said:

Depending on how close to the minimum performance edge your RV battery setup is. It's important to remember that a diode has a .7v loss. Loss makes heat, that is why this type of isolator has fins. 

Came across the  diode one I have in a thrift store for a couple dollars but never installed it.  Been so long I can't remember where it is now.... <gees>

Everyone has that "dead coach battery" after winter issue.  Even unplugged, they seem to discharge.

I always hook up the coach battery to a low amp charger for a few days before I switch to the AC/DC inverter/charger to top it up before even trying to turn the engine on.  I guess I have been doing the right thing with out knowing.

I do think that a "smart" isolator might be in the cards before I head out this year.

Depending on how close to the minimum performance edge your RV battery setup is. It's important to remember that a diode has a .7v loss. Loss makes heat, that is why this type of isolator has fins.