I ordered one a few days ago. Much less expensive when ordered
directly from Renogy.

It also acts as an isolator between the batteries, and has an
interesting feature
where you can toggle the maximum charging current by half (potentially
useful with Lithium batteries).

J

On Wed, Jun 19, 2024 at 10:45 AM Mark McCulley <mark@markmcculley.com> wrote:
>
> This looks like an interesting device, would allow the alternator to properly charge AGM batteries.
>
> -Mark
>
> > On Jun 18, 2024, at 7:47 AM, Jack R <jack007@COMCAST.NET> wrote:
> >
> > Has anyone installed a DC to DC battery charger for the AUX battery?
> >
> > This allows you to charge off the starter battery/alternator to the AUX (any
> > battery type).
> >
> > Seems like the way to go.
> >
> > https://tinyurl.com/4pwmmyyh
> >
> >
> >
> > Jack R.