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Forum Replies Created
March 16, 2011 at 12:00 am in reply to: Nickel Iron vs. Lead Acid — Off-Grid Battery Showdown #65066
Treasure – thank you for the guidance. It is a constructive discussion I am seeking, and I appreciate you letting this happen.
Moguitar – You have lived off-grid for 12.5 years and only changed your batteries once. Would this not put the average life of your batteries at 6.25 yrs? With the nickel iron batteries you do not have to replace them after 6 yrs. Does it concern you that you will have disposed of two complete sets of batteries when you get your next set?
Dustoffer – It is great to see your comments and calculations. Unfortunately the size of the batteries did not fit your setup, but this is something we must take into consideration when designing any system. Since many of my clients are designing from scratch, they are able to incorporate the batteries without a problem!
Nickel Iron is a different technology than Lead Acid. You are going to have different requirements, and my goal is to help educate everyone. Below is a link to the Nickel Iron Wiki. This is not my site, I am not affiliated, etc, but it is very informative. Please take a look…
I am not getting a ton of traction with this post. I am however talking with a customer who has been using a set of Nickel Iron batteries (150ah) for 27 years.
The cells were used when they came to him, and he has used them without problem for over 2 decades.
Two of the cells need new electrolyte, which we are helping to provide. A couple of equalizing charges and the old batteries will be just like new!
I don’t know if you are still checking this, OP, but here is some good info on someone who was able to go off-grid in suburban Chicago…
I too am looking to take my home off grid, and am wondering if anyone has suggestions on how to slowly transition my appliances / electrical system to be powered by a stand-alone battery system?February 17, 2011 at 12:00 am in reply to: Nickel Iron vs. Lead Acid — Off-Grid Battery Showdown #64999
I would love to share more, but do not want to blatantly self-promote.
Let me just answer your questions, simply because I want people to know more about the technology.
ELNAV – I am really interested to hear about your micro-hydro application. I helped design a system for a gentleman in NC, but he never installed. He couldn’t get the permit for a holding pond (or didn’t care to pursue it).
Either way, efficiency is something that everyone is asking about. It is true that you have to put a little more in to charge the system, but listen; You never have to buy batteries ever again. Personally, I feel strongly about the environmental benefits of not having to toss out your batteries every 5-7 years.
What kind of modules do you have? What is the output voltage? You can charge these batts at 17 V or more – can your charge controller even get to that voltage? Would love to hear more about your water source / expected output.
How you feel about the payback on your investment in an off-grid system? Have you made serious changes, or was the transition pretty smooth?
Very interested to hear if you feel there value to going off-grid!
I have dimmable LED lights in my kitchen (under the cabinets). They are great, and look sharp.
Are you working with anyone in CO? There are a lot of growers out here who may be interested in putting LED lights in – bet you can save some good money.
Send me some info if you have it. Thanks!
Wait a second, can you explain that a little more? I have helped people to get their full tax credits, and it sounds like you are over-calculating.
You should be able to deduct 30% of the system cost from your total tax liability. This is a straight forward deduction. I got my 30% for the efficiency upgrades I did – took it right off the bottom line.
Check out the gov’t website on tax credits: https://www.dsireusa.org/
Good luck, my friend, good luck!