Monte,
I would guess the batteries were shipped dry to save weight, and hazardous shipping problems. Used to be batteries came dry and you would add the acid. In your case what? caustic or alkaline. I would add the alkaline to the mix if in fact they use alkaline instead of acid. I don't believe water by itself will establish the chemical state needed. Did you find any residue on the plates or on the sidewalls of the cells? Do keep in mind that caustic will eat away any flesh it comes in contact with, so be careful, and rush to the doc if you do have a spill.
Kevin
http://simplyrv.
For RV information
--- On Fri, 7/17/09, Mark Stafford <mstafford@natca.
From: Mark Stafford <mstafford@natca.
Subject: [Electric Boats] Re: Nickel-Iron Battery Questions
To: electricboats@
Date: Friday, July 17, 2009, 6:07 PM
Monte,
Lucky you! I hear the Nickel-Iron tech is from some of the first industrial batteries, and they can last for nearly 100 years. No manufacturer in there riches dreams would make such a critter (no repeat customers). The rights were bought by one of the big guys.
I don't know the best way to revive them... I'll hunt around. I would guess pure water, gentle agitation or internal circulation (external pump with small hoses fitting inside the cells), charted specific gravity measurements, then additional KOH to the under-performing cells after multiple charge/discharge cycles.
Mark Stafford
--- In electricboats@ yahoogroups. com, "Monte Gisborne" <emotive@... > wrote:
>
> Hello Fellow E-Boaters:
>
>
>
> I have recently acquired a quantity of Nickel-Iron batteries produced by
> Eagle Picher around 1994, originally to be installed in a TVan (electric
> vehicle built and sold by Chrysler). They are 200 amp-hour 6-volt modules
> and weigh about 55 lbs. with electrolyte and are the same size as a standard
> golf cart battery. They appear to have never been used and any original
> liquid in the batteries has dissipated into the air as they are totally dry
> inside, verified by destructive testing on one module. A simple test of
> adding some water to one of the batteries yielded a functioning battery,
> although I am not sure if total capacity was restored. They came with about
> a liter of Potassium Hydroxide (KOH) flakes to restore the electrolyte.
>
>
>
> Questions: What is the best method to restore these batteries to full
> capacity? Do I simply add water or do I add a mixture of water and
> dissolved KOH flakes? Should I flush out the batteries first and if so, how
> would I do that?
>
>
>
> My intention is to restore these batteries to proper health and would
> appreciate any insight that this group may have.
>
>
>
>
>
> With thanks,
>
>
>
> Monte
>
>
>
>
>
> [Non-text portions of this message have been removed]
>
[Non-text portions of this message have been removed]
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