Hi Mike,
Thanks for the suggestions. I did pickup some cable lugs and heat shrink on the way home from the boat yesterday and will make up a new jumper today. All the connections went back as they came off, I did them one at a time. The loose connection on the jumper cable going from bat #2 to bat #1 really surprised me. I'm pretty diligent about that stuff but I'll be checking connections more often now.
Thanks again I'll keep the group posted.
Mark
Santa Cruz
--- In electricboats@yahoogroups.com, Mike <biankablog@...> wrote:
>
> Mark:
> Â
> On a closer reading I see you cleaned the battery contacts. I was thinking are you sure you replaced the jumpers back on the SAME batteries? Perhaps the jumper was moved to battery four and that's why that battery now shows a failing battery. I would also recheck the connections to the battery. A poor connection in the jumper might also cause it to heat up.
> Â
> Capt. Mike
> http://biankablog.blogspot.com
> Â
>
>
> --- On Sat, 6/18/11, acsarfkram <acsarfkram@...> wrote:
>
>
> From: acsarfkram <acsarfkram@...>
> Subject: [Electric Boats] battery issue
> To: electricboats@yahoogroups.com
> Date: Saturday, June 18, 2011, 3:12 AM
>
>
> Â
>
>
>
> 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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