Edison cell information [RE-wrenches]

[William Korthof]

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>
>I recently picked up a rather large amount of Edison cell nickel iron 
>alkaline railroad batteries. (Thanks Mr. Sharkey!!)
>I was wondering if anyone out there has an old manual for these or 
>anything else in print which would help with the care and feeding of these 
>critters?

As I recall, NiFE batteries are very durable, serviceable, and
robust but have drawbacks:
-relatively low power (high internal resistance)... probably fine
  if you design for a ~5+ hr discharge rate
-they require fairly aggressive charging (leads to next point)
-they are a wet cell, dissociate non-trial amounts of water in
  charging, so they require significant watering
-they are relatively inefficient, both from the high charging
  voltage (eg, 1.6 Vpc), low discharge voltage (eg, 1.0 Vpc),
  and coulomb losses from overcharge (perhaps 20%)

/wk

>The manufacture dates range from 1943 to 1957 and all appear to be in fair 
>to good condition. I don't anticipate being able to resurrect all of them 
>but am hopeful that some of them will prove to be useable. If nothing 
>else, they will make great paperweights and conversation items in my showroom!
>
>Hopefully some of you are are of the pack rattus family like I am and have 
>something lurking WAY back in the dusty stacks....
>
>--
>Roy Butler
>NABCEP Certified Solar PV Installer™
>Four Winds Renewable Energy, LLC
>8902 Route 46
>Arkport, NY 14807
>607-324-9747
>www.four-winds-energy.com
>NYSERDA eligible PV installer for PON 716
>NYSERDA eligible wind installer for PON 792
>
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