I have only seen this in cases with DC loads and no LVD. Inverter
systems without DC loads would never exhibit this behavior, unless there
was a short in the battery cabling or bad cells.
R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
Licensed Master Electrician
Solar Design Engineer
303 505-8760
On 12/19/2014 12:23 PM, Jay Peltz wrote:
I find it really curious.
I've been dealing with batteries for almost 20 yrs. I've seen so many
dead, flat batteries, systems etc I can't count them all.
But I've yet to find a reversed one.
I understand the process.
I'm trying to understand how he could get multiple reversed batteries
at one go?
Jay
Peltz power
Sent from my iPhone
On Dec 19, 2014, at 9:47 AM, jarmo.venalai...@schneider-electric.com
<mailto:jarmo.venalai...@schneider-electric.com> wrote:
Hi:
This cell reversal ability of lead acid batteries gives good
perspective on just how much you can mistreat them and beat them up
and still have an expectation of "recovery".
Lithium cells on the other hand without a full range of protections
would have long since filled the home with all kinds of interesting
high temperature thermal events, gaseous compounds and chemicals, and
there is no way you could get that magic smoke back into them.
JARMO
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Phone:* +604-422-2528 | *Fax:* +604-420-1591 | *Mobile:*
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Email:* _jarmo.venalainen@schneider-electric.com_
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From: Corey Shalanski <cshalan...@joule-energy.com
<mailto:cshalan...@joule-energy.com>>
To: re-wrenches@lists.re-wrenches.org
<mailto:re-wrenches@lists.re-wrenches.org>,
Date: 12/19/2014 06:48 AM
Subject: Re: [RE-wrenches] Magnum System - Discharged Battery Bank
Sent by: "RE-wrenches" <re-wrenches-boun...@lists.re-wrenches.org
<mailto:re-wrenches-boun...@lists.re-wrenches.org>>
------------------------------------------------------------------------
Update on my investigation:
I visited the customer's house yesterday to set up a pulse charger.
Much to my surprise the three batteries that originally registered
negative voltage are now reading positive. Does this make sense - are
batteries able to shift between negative and positive voltages at
such a low charge level?
I do not see any evidence of distorted cases.
On Thu, Dec 18, 2014 at 7:58 AM, <_jay@asis.com_
<mailto:j...@asis.com>> wrote:
I second tump.
Most likely a bad /cell battery took out the system.
As these are VRLA batteries, I'm curious do,the cases look damaged
such as expanded or sunk in?
Jay
Peltz power
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