<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Forever? Well, at least Edison thought they should last 100 years. As mentioned by others, inefficiency is an impairing factor in an RE system. However, due to the all time low cost for PV solar modules, these batteries can actually be a viable option. If you have the space for 40% more PV power and you have a customer willing to keep the batteries filled, the Ni-Fe battery could be the last battery they will ever buy. Imagine the grand-kids inheriting the battery bank.<div><br></div><div>Of course, there are many other details for you to study and understand before diving in; don't compare these to lead acid. I have about 25 that of these that are many years old that I bought for experimenting. I have also read about an 85 year old bank that was made useable again by Peter DeMar.<div><div><div>
<span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div><br class="Apple-interchange-newline">Larry Crutcher</div><div>Starlight Solar Power Systems</div></div></span></span><div><br></div></div></span></div></span><br class="Apple-interchange-newline"></span><br class="Apple-interchange-newline">
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<br><div><div><span class="Apple-style-span" style="font-family: 'Times New Roman'; font-size: 16px; ">On Sep 25, 2012, at 11:19 AM, Jonathan Hill wrote:</span></div><div id="SafeStyles1348627217"><div class="WordSection1"><div><div><div><div style="font-family: arial; font-size: large; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 0px; "><span style="font-family: 'Times New Roman'; font-size: 12pt;"><span style="font-size: 12.0pt;"><br><br></span></span></div>
<div><div style="font-family: arial; font-size: large; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 0px; "><span style="font-family: 'Times New Roman'; font-size: 12pt;"><span style="font-size: 12.0pt;">Anyone know anything about Nickel-Iron Batteries? We sold some many years ago but our supplier stopped carrying them. I have a client with a fairly large bank of Hawker industrial batteries; 2100ah @ 48v. He is asking about replacing them with Ni-Fe as he has heard that they will last virtually forever, or at least longer than he might. Any thoughts on this? Also, any suggestions of good suppliers? Thanks.</span></span></div>
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<div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 0px; "><span style="font-family: Helvetica; font-size: 10pt;"><span style="font-size: 10.5pt; font-family: "Helvetica","sans-serif";">563C Idaho Maryland Road</span></span></div>
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<div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 0px; "><span style="font-family: Helvetica; font-size: 10pt;"><span style="font-size: 10.5pt; font-family: "Helvetica","sans-serif";">Grass Valley, CA 95945</span></span></div>
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<div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 0px; "><span style="font-family: Helvetica; font-size: 10pt;"><span style="font-size: 10.5pt; font-family: "Helvetica","sans-serif";">Celebrating our 32nd year in solar!</span></span></div>
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<div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 0px; "><span style="font-family: Helvetica; font-size: 10pt;"><span style="font-size: 10.5pt; font-family: "Helvetica","sans-serif";">tech info and foreign orders: (530) 273-6754 </span></span></div>
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<div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 0px; "><span style="font-family: Helvetica; font-size: 10pt;"><span style="font-size: 10.5pt; font-family: "Helvetica","sans-serif";">order line: (888) ON-SOLAR (US only) FAX: (530) 273-1760</span></span></div>
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<div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 0px; "><span style="font-family: Helvetica; font-size: 10pt;"><span style="font-size: 10.5pt; font-family: "Helvetica","sans-serif";">e-mail: <<a href="mailto:solarjon@sierrasolar.com">mailto:solarjon@sierrasolar.com</a>></span></span></div>
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<div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 0px; "><span style="font-family: Helvetica; font-size: 10pt;"><span style="font-size: 10.5pt; font-family: "Helvetica","sans-serif";">world wide web: <<a href="http://www.sierrasolar.com/">http://www.sierrasolar.com</a>></span></span></div>
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