[Vwdiesel] Auxiliary Battery

[Roger Brown]

Roger Brown wrote:
>
> Kevin Jack wrote:
> >
> > Land Cruiser fanatic too, Roger??
> >
> > I think it depends on the rating of the alternator. If you have a big
> > alternator in your 4x4 then you might not have problems. Maybe someone knows
> > the rating of the VW, or has done this already.
>
> You'll not have any more alternator load with 2 batteries vs. 1.  With dual batteries, each will be doing 1/2 the work (compared
> to a single battery) so will need 1/2 the current to charge each one.  The alternator won't know the difference between 1 and 2
> batteries.  I ran with both the stock 65A Toyota alternator and now a 160A unit and both worked fine.

Also wanted to mention that the way mine is set up, I can isolate one battery (or the other) with the flip of a switch to make
it into a single battery system.  Also works as a self-jumpstart feature, in that you can bring in the 2nd battery if the 1st
one is dead.  I've done this more time than I can remember.

--
    Roger