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<p>The 6650 definitely meets all the UL's, ETLs, and UN's. Probably the first one to do this and since Michael said that it is a first for Discover, the jury is out until an FA is complete.</p>
<p>Good points by you Larry, but not valid for many thousands of Discover AES 6650s.</p>
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<pre><strong><span style="font-size: small;">Dave Angelini Offgrid Solar
"we go where powerlines don't"
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text 209 813 0060</span></strong></pre>
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<p id="reply-intro">On 2024-05-03 9:23 am, Starlight via RE-wrenches wrote:</p>
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<div style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;">Hi Michael,
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<div>For 11 years I've been in the Li battery business. We formerly designed and installed over a hundred Li battery based systems, mostly mobile installations but UPS and off-grid as well. Since 2018, we no longer do installations. Currently we sell our own Li-ion brand with many thousands sold and in use. We have not had any fire or explosion claims.</div>
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<div>Most Li batteries sold in the US are not UL1973 or ETL certified. Many batteries are very cheaply made to have the lowest price. Based on my experience I consider any battery not certified as potentially dangerous. I don't know if Discover is certified and make no statement about them. </div>
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<div>An important question is what will an insurance company do if there is a claim and the product you install is not certified to these high safety standards? Worth considering.</div>
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<div>On May 3, 2024, at 8:21 AM, Michael Morningstar via RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org" rel="noreferrer">re-wrenches@lists.re-wrenches.org</a>> wrote:</div>
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<div dir="ltr">Two days ago, one of my clients came home to find the door of his powershed blown off its hinges and a smoldering Discover AES. The case was still intact and the entire room is coated with a fine graphite-like powder. The fire department was unable/unwilling to do anything to cool the battery down and it smoldered for a day. 199 degrees fahrenheit after 18 hours. Discover is taking this seriously and their response has been great. They are in contact with the cell manufacturer to find a "best practices" for the clean up of the room. They also have said that this is a first for them (lucky me).
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<div>I'm just curious how rare or common <span class="v1gmail_signature_prefix">LiFePO 4 explosions are? I've never heard of one in the context of residential storage. This has me pretty freaked out.</span><br />
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<div style="margin: 0px; font-style: normal; font-variant-caps: normal; font-weight: normal; font-stretch: normal; font-size: 18px; line-height: normal; font-family: Helvetica;">Michael Morningstar </div>
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<div style="margin: 0px; font-style: normal; font-variant-caps: normal; font-weight: normal; font-stretch: normal; font-size: 18px; line-height: normal; font-family: Helvetica;">Morningstar Electric Inc</div>
<div style="margin: 0px; font-style: normal; font-variant-caps: normal; font-weight: normal; font-stretch: normal; font-size: 18px; line-height: normal; font-family: Helvetica;">PO Box 1494</div>
<div style="margin: 0px; font-style: normal; font-variant-caps: normal; font-weight: normal; font-stretch: normal; font-size: 18px; line-height: normal; font-family: Helvetica;">Mount Shasta, CA 96067</div>
<div style="margin: 0px; font-style: normal; font-variant-caps: normal; font-weight: normal; font-stretch: normal; font-size: 18px; line-height: normal; font-family: Helvetica;">530-921-0560</div>
<div style="margin: 0px; font-style: normal; font-variant-caps: normal; font-weight: normal; font-stretch: normal; font-size: 18px; line-height: normal; font-family: Helvetica;">CSLB 1116835</div>
<div style="margin: 0px; font-style: normal; font-variant-caps: normal; font-weight: normal; font-stretch: normal; font-size: 18px; line-height: normal; font-family: Helvetica;"><a href="mailto:mjmorningstar@gmail.com" rel="noreferrer">mjmorningstar@gmail.com</a></div>
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