The problem is that if you have 2 batteries connected together, they must be
exactly the
same or they will draw each other down. I know it may sound crazy, but ask
someone
who knows batteries and they should confirm. If you leave the two batteries
connected
without the engine charging they will draw ezch other down.

Your isolator should disconnect the batteries when the engine is not charging.

Hope this helps.
Skyraider

James H. McCarthy wrote:

> On my '95 EVC (which is technically a 'new' vehicle, starting its warranty
> in January '98) I am having trouble keeping my rear deep cycle battery
> charged.  At first it charged not at all.  Then Winnebago changed a part,
> so that it now charges when I drive the van.  However if I leave the van
> parked for a couple of days, I find the battery down to zero again.  The
> front/engine battery works just fine. Suggestions on what might be
> happening, or how I search for the source of 'leakage' is appreciated.  Jim
> McCarthy, Somerville, MA