When I had batteries reverse polarity they quickly turned around but never had their capacity after. 2nd, that is a clear indication of a DC drain that can kept draining all the way to zero. The strongest batteries keep giving voltage, while weaker batteries give all they have and become resistors. Its really a horrible situation that I have since avoided with LVDs, etc.

R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
Licensed Master Electrician
Solar Design Engineer
303 505-8760

On 12/19/2014 7:48 AM, Corey Shalanski wrote:
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, <[email protected] <mailto:[email protected]>> 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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