[RE-wrenches] Magnum System - Discharged Battery Bank

[Jarmo.Venalainen at schneider-electric.com]

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 
_____________________________________________________________________________________ 


Jarmo Venalainen  |   Schneider Electric   |  Solar Business  |   CANADA | 
  Training & Development Specialist - Senior 
Phone: +604-422-2528  |   Fax: +604-420-1591  |   Mobile: +604-505-0291 
Email: jarmo.venalainen at schneider-electric.com  |   Site: www.SEsolar.com 
|   Address: 3700 Gilmore Way, Burnaby, BC V5G4M1 


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From:
Corey Shalanski <cshalanski at joule-energy.com>
To:
re-wrenches at 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-bounces at 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 at 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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