[RE-wrenches] Nickel-Iron Batteries

[Tom Duffy]

Nickel iron has been around since Edison (Thomas) the cells are 1.2 volt and use potassium hydroxide as an electrolyte. The problem we had with them 20 or so years ago was that the voltage range is large, too large for electronics. So the useable range (window) is not that great. I have actually seen some that the cases were nickel... I can't imagine what that would cost today.

We concluded that while what you read looks amazing, they're not all that useful for RE applications using inverters. They might be useful if you're doing straight DC circuits. But it's a lot of cells.

Kind Regards

Tom Duffy
Senior Solar Design Engineer

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tom at thesolar.biz
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-----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 12:35 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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