[RE-wrenches] Nickel-Iron Batteries

[Darryl Thayer]

I have looked at these batteries and they are very expensive for the kWh I am also conserned with the charge/discharge rate.  I have a project that I am thinking of using these for, in that the kOH stays KOH through out the charge discharge, which meand they will not freeze like lead acid.  So for low temp of the battery survirval the NiFe looks good.  .  I do not know how they behave when hot, but LA are very shortened life.  
 
 

________________________________
 From: R Ray Walters <ray at solarray.com>
To: RE-wrenches <re-wrenches at lists.re-wrenches.org> 
Sent: Saturday, May 5, 2012 5:44 PM
Subject: Re: [RE-wrenches] Nickel-Iron Batteries
  
It is a Colorado company, but they are importing them from China. I've met the owner. 
My understanding is the plates do not deteriorate, but the electrolyte needs to be replaced every 5 - 10 years, so technically you would never need another set, just KOH.

Ray Walters

On May 5, 2012, at 12:43 PM, Phil Theis wrote:

> Thanks Bill,
> They are presumably making these in Lakewood, CO
> http://ironedison.com/about-us
> Phil
> 
> On 5/5/2012 3:32 PM, William Dorsett wrote:
>> I don't know that there are any new sources for NiFe batteries and the last
>> ones were either from China and Hungary. While they were advertised as new,
>> some at least arrived in obviously used condition. They are reputed to be
>> nearly indestructible, but I've seen piles of used recycled ones. They do
>> have some good features such as easy recyclability, and use KOH as the
>> electrolyte so you don't have to worry about spills. If the price was good
>> and they are from a reliable source these could be good.
>> 
>> Bill Dorsett
>> Sunwrights
>> Manhattan, KS
>> 
>> -----Original Message-----
>> From: re-wrenches-bounces at lists.re-wrenches.org
>> [mailto:re-wrenches-bounces at lists.re-wrenches.org] On Behalf Of Phil Theis
>> Sent: Saturday, May 05, 2012 1:35 PM
>> To: RE-wrenches at lists.re-wrenches.org
>> Subject: [RE-wrenches] Nickel-Iron Batteries
>> 
>> Greetings,
>> Does anyone have experience with Iron Edison Batteries for an off grid
>> application?
>> They claim "excellent and reliable performance for 20+ years"
>> Thank you,
>> Phil Theis  NABCEP Certified PV Installer PennSun Solar
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