Battery Charger Options [RE-wrenches]

[Bruce Geddes]

Hi Daryl,
                Thanks for the info.  This opens up other possibilities for
more flexible use of this gear.

Cheers,
Bruce Geddes
PowerOn


----- Original Message -----
From: "Darryl Thayer" <daryl_solar at yahoo.com>
To: <RE-wrenches at topica.com>
Sent: Sunday, November 30, 2003 6:27 PM
Subject: Re: Battery Charger Options [RE-wrenches]


> HI Bruce and Travis
>
> I just spoke with a friend who has worked with the
> MX60 in this way.  He has used a power supply and
> charged batteries of lower voltage than the power
> supply.  He said it works fine.  He has also used 24
> volt power supply to charge 12 volt batteries.
>
> He did not feel confident that my 120 volt DC supply
> would work safely.  But with a lower voltage supply
> (less than 60 volts) the current limit works.
>
> Darryl
>
>
> --- Bruce Geddes <b.geddes at clear.net.nz> wrote:
> >
> > Hi Travis,
> >
> > > I assume that if I hooked up a 24 volt battery to
> > the PV side of the
> > > MX60 and tried to output 15 volts that the magic
> > smoke would come out of
> > > the MX60.  Anybody want to loan me one of theirs
> > so I can try?
> >
> > I would expect so but it may pay to check with the
> > Outback guys.  To me the
> > 24V battery would be like an unlimited current
> > source so the MX60 would have
> > trouble finding MPP and probably well exceed 60A
> > trying to do so - hence the
> > smoke escapes.  The only way to do this would be to
> > get a current source
> > that is limited to the maximum charge current you
> > want into your AGM's and
> > within the limits of the MX60.
> >
> > Cheers,
> > Bruce Geddes
> > PowerOn
> >
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