end battery failure? [RE-wrenches]

sunwise sunwise at cheqnet.net
Thu Dec 19 08:31:20 PST 2002


Having different exposure could be the ticket.  Different temps require
different charge parameters (the sun's not hitting the end batts, is
it?).  Then again, I do know of folks who tear apart the battery pack
periodically to swap them around and "balance" them.  I've never done
this although I don't usually notice wide variances in cell readings
regarding end batts.

Kurt Nelson

-----Original Message-----
From: Jay Peltz, Peltz Power [mailto:jay at asis.com] 
Sent: Thursday, December 19, 2002 9:44 AM
To: RE-wrenches at topica.com
Subject: Re: end battery failure? [RE-wrenches]

Yep.  Plus they are good quality 2/0 and 4/0 cables.

They are outside, under a building, so the end batteries do get more
exposure to the elements than the "inside" batteries.

Jay

sunwise wrote:

> Hey Jay,
> I'm pretty sure I know the answer before I even ask the question, but
> the main battery cables are brought in at opposite ends of the
battery,
> right?
>
> Kurt Nelson
>
> -----Original Message-----
> From: Jay Peltz, Peltz Power [mailto:jay at asis.com]
> Sent: Tuesday, December 17, 2002 11:06 PM
> To: RE-wrenches at topica.com
> Subject: end battery failure? [RE-wrenches]
>
> Hi all,
>
> Here is another battery question.
>
> 48v battery, L-16's, 2 strings.  Batteries on good system, hydro all
> winter, good
> summer sun, pretty well maintained, desulfaters as well. 2 x 4048
> inverters, 15kw
> genset.
>
> One both strings, the end batteries failed, while all the interior
ones
> are fine.
>
> One comment ( clue), the owner likes to keep the batteries very high,
> 60v.  Now
> this isn't a problem in the summer, but in hydro weather, this could
> mean 60v for
> days or even weeks at a time.?
>
> Thanks all,
>
> jay
>
> Peltz Power
>
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