Yup, it was a bad connection in the #3 to #4 jumper. I soldered the lugs to the jumpers and this one didn't take. The amazing thing is it took over three years to show up. I think the adhesive heat shrink held it together.
Replaced the bad jumper with crimped connections and all is good. The PakTrakr was instrumental in warning me about a problem.
Thanks for the suggestions.
Mark
Santa Cruz
--- In electricboats@yahoogroups.com, Joe McLaughlin <joemcl1@...> wrote:
>
> If the jumper between #4 and#3 is getting warm while the others are cool I
> think( for sure) that you have a bad connection to your battery or the
> connector lug on the ends of the #4 to#3 jumper.
>
> On Fri, Jun 17, 2011 at 11:12 PM, acsarfkram <acsarfkram@...> wrote:
>
> > **
> >
> >
> > My PakTrakr warned of a failing battery, battery #2. Under load of 40-50
> > amps #2 was running in the low 11 volts. I cleaned up the contacts (and
> > found a loose connection between #2 and #3!!)and the alert went away. Then I
> > ran the motor at 30 or so amps for five minutes and got an Alert on the #4
> > battery. The reading under load was again in the low 11 volts but on the #4
> > battery. The #2 battery is now right with the other batteries, in the upper
> > 12 volt range. The jumper wire from #4 to #3 is getting warm while all the
> > other jumpers are cool.
> >
> > I'm preparing for a bad battery but curious about the migration of PakTrakr
> > Alert.
> >
> > Any thoughts?
> >
> > Four group 27 AGMs for a 48 volt bank
> >
> > Mark
> > Santa Cruz
> >
> >
> >
>
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