<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">HI All,<div class=""><br class=""></div><div class="">The cover never got all the way off before it was blown off, it was just started to be opened, so no way there was an external ignition source. If it was an explosion it was all from internal components except for possibly some O2 coming from the outside.</div><div class=""><br class=""></div><div class="">My other question still hasn\u2019t been answered. </div><div class="">If the BMS isn\u2019t taking care of over/under voltage and over current what is it doing to prevent damage to the battery?</div><div class="">( this system was within the input PV or output inverter watts/amps of the battery specifications) And I just found out that on the day of failure, no one has been living there for months and only a grundfos SQFlex and a few lights were on, no big loads. </div><div class=""><br class=""></div><div class="">Now maybe I\u2019ve been under the false understanding that this is the primary job of the BMS? </div><div class="">Yes I know that there is also cell balancing, % monitoring, blue tooth, wifi etc that can be included in the BMS but to me thats all secondary.</div><div class=""><br class=""></div><div class="">Hopefully someone can clear this up for me.</div><div class=""><br class=""></div><div class="">jay</div><div class=""><br class=""></div><div class=""><br class=""></div><div class=""><br class=""></div><div class=""><br class=""></div><div class=""><div><br class=""><blockquote type="cite" class=""><div class="">On Jun 17, 2021, at 9:01 AM, Steve Higgins <<a href="mailto:steve@surrette.com" class="">steve@surrette.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div dir="ltr" class="">I have to agree... the gasses that come out of these cells can still be flammable... My guess is the settings were too high, or a cell or two were already in thermal runaway, causing internal gassing. When the cover was pulled off that gas found an Ignition source and ignited. <br class=""><br class="">Inverter and charge controllers all have relays in them and every time they switch you can ignite flammable gasses if the concentration is enough. <br class=""><br class="">This is why it's always very important to make sure the room that any battery is installed in is properly ventilated, especially when you are working in said room. <br class=""><br class=""><br class=""><br clear="all" class=""><div class=""><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div style="float:left;padding:1px 10px 0 0" class=""><a href="http://www.rollsbattery.com/" target="_blank" class=""></a><a href="http://www.rollsbattery.com/" target="_blank" class=""></a><a href="http://www.rollsbattery.com/" target="_blank" class=""></a><a href="http://www.rollsbattery.com/" target="_blank" class=""></a><a href="http://www.rollsbattery.com/" target="_blank" class=""></a><a href="http://www.rollsbattery.com/" target="_blank" class=""></a><a href="http://www.rollsbattery.com/" target="_blank" class=""></a><a href="http://www.rollsbattery.com/" target="_blank" class=""></a><a href="http://www.rollsbattery.com/" target="_blank" class=""></a><a href="http://www.rollsbattery.com/" target="_blank" class=""></a><a href="http://www.rollsbattery.com/" target="_blank" class=""></a><a href="http://www.rollsbattery.com/" target="_blank" class=""></a><a href="http://www.rollsbattery.com/" target="_blank" class=""></a><a href="http://www.rollsbattery.com/" target="_blank" class=""></a><a href="http://www.rollsbattery.com/" target="_blank" class=""></a><a href="http://www.rollsbattery.com/" target="_blank" class=""><img src="https://imgur.com/hENEoQQ.png" alt="" style="padding:3px 0px 0px 10px;float:left;margin-right:10px;width:98px;height:115px" class=""></a><div style="font-style:normal;font-variant:normal;font-weight:bold;font-stretch:normal;font-size:14px;line-height:20px;font-family:Arial,Helvetica,sans-serif;margin:0px" class=""><font color="#bb1a1d" class="">Steve Higgins \u22c5
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t</font><span style="color:rgb(184,39,106)" class="">
<span style="font-weight:normal;color:#404040" class="">+1.902.597.4020</span> </span><font color="#bb1a1d" class="">m</font>
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<div class="">
<pre class=""> </pre>
<pre class=""><strong class=""><span style="font-size:small" class="">Dave Angelini Offgrid Solar
"we go where powerlines don't"
<a href="http://members.sti.net/offgridsolar/" target="_blank" class="">http://members.sti.net/offgridsolar/</a>
e-mail <a href="mailto:offgridsolar@sti.net" target="_blank" class="">offgridsolar@sti.net</a>
text 209 813 0060</span></strong></pre>
</div><p class="">On Thu, 17 Jun 2021 07:23:07 -0400, John Blittersdorf <<a href="mailto:john.blittersdorf@gmail.com" target="_blank" class="">john.blittersdorf@gmail.com</a>> wrote:</p>
<blockquote type="cite" style="padding-left:5px;border-left:2px solid rgb(16,16,255);margin-left:5px;width:100%" class="">
<div dir="auto" class="">This just proves the weak link is the BMS.</div>
<div dir="auto" class="">I had the honor of replacing the BMS in that exact model in a stack of 3 batteries. Luckily it was on the bottom shelf so I could pull the monster out onto the floor to get access to the lid. The lid is sealed shut but with persistence it opened. I was working with their tech support and following their instructions. I disconnected it from the other two that were in a parallel configuration before opening. Battery voltage was zero at the terminals. I did voltage checks at various checkpoints to confirm it was the BMS at fault. Relion sent a new BMS which I carefully installed and it has worked fine since. Had I seen this photo first, I may have not been so eager to see the inside of that battery. </div>
<div dir="auto" class=""> </div>
<div dir="auto" class="">John Blittersdorf</div>
<div class=""><br class="">
<div class="gmail_quote">
<div class="gmail_attr" dir="ltr">On Wed, Jun 16, 2021 at 6:13 PM Chris Worcester <<a href="mailto:chris@solarwindworks.com" target="_blank" class="">chris@solarwindworks.com</a>> wrote:</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div dir="auto" class="">
<div dir="auto" class=""><a href="https://www.redwoodmaterials.com/recyclewithus" target="_blank" class="">https://www.redwoodmaterials.com/recyclewithus</a> </div>
<div dir="auto" class="">these folks are seriously getting into recycling lithium batteries, setting up house out by the Tesla giga factory out east of Reno. </div>
<div dir="auto" class=""> </div>
<div dir="auto" class=""> </div>
<div dir="auto" class=""> </div>
<div id="gmail-m_1869807318571630086m_-5301734670143486934composer_signature" dir="auto" class="">
<div style="font-size:85%;color:rgb(87,87,87)" dir="auto" class="">Chris Worcester </div>
<div style="font-size:85%;color:rgb(87,87,87)" dir="auto" class=""><a href="mailto:chris@solarwindworks.com" target="_blank" class="">chris@solarwindworks.com</a></div>
<div style="font-size:85%;color:rgb(87,87,87)" dir="auto" class="">530-448-9692</div>
<div style="font-size:85%;color:rgb(87,87,87)" dir="auto" class=""> </div>
<div style="font-size:85%;color:rgb(87,87,87)" dir="auto" class="">Sent from my Samsung Galaxy s9.</div>
</div>
</div>
<div dir="auto" class="">
<div dir="auto" class=""> </div>
<div class=""> </div>
<div style="font-size: 100%;" dir="auto" align="left" class="">
<div class="">-------- Original message --------</div>
<div class="">From: jay <<a href="mailto:jay.peltz@gmail.com" target="_blank" class="">jay.peltz@gmail.com</a>></div>
<div class="">Date: 6/16/21 12:49 PM (GMT-08:00)</div>
<div class="">To: Jeff Clearwater <<a href="mailto:jeffc@villagelab.net" target="_blank" class="">jeffc@villagelab.net</a>>, Jeff Clearwater <<a href="mailto:jeffc@villagepowerdesign.com" target="_blank" class="">jeffc@villagepowerdesign.com</a>>, RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org" target="_blank" class="">re-wrenches@lists.re-wrenches.org</a>></div>
<div class="">Subject: Re: [RE-wrenches] Exploding LFP battery</div>
<div class=""> </div>
</div>
Hi Jeff,
<div class=""> </div>
<div class="">I don't know if you saw the photo. No cutting involved.</div>
<div class="">The top is removed with roughly 14 fasteners. </div>
<div class="">No tools or prying was involved in the removal of the top cover.</div>
<div class=""> </div>
<div class="">jay</div>
<div class="">
<div class=""><br class="">
<blockquote type="cite" style="padding-left:5px;border-left:2px solid rgb(16,16,255);margin-left:5px;width:100%" class="">
<div class="">On Jun 16, 2021, at 12:00 AM, Jeff Clearwater <<a href="mailto:jeffc@villagepowerdesign.com" target="_blank" class="">jeffc@villagepowerdesign.com</a>> wrote:</div>
<br class="">
<div class=""><span style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration:none;float:none;display:inline" class="">Hey Jay,</span><br style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration:none" class=""><br style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration:none" class=""><span style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration:none;float:none;display:inline" class="">So I don't believe ReLion batteries are openable - so it's most likely that when he decided to open it he cut into it and shorted the leads.</span><br style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration:none" class=""><br style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration:none" class=""><span style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration:none;float:none;display:inline" class="">As for recycling - first is health safety! I'd suggest he contact the manufacturer and get specific instructions for safing the mess. Will Prowess of DIY Solar Youtube channel had some leaky cells and the manufacturer sent specific instructions to contain and ship back the unit. You could contact him and he might know but the manufacturer might know better for that specific model.</span><br style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration:none" class=""><br style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration:none" class=""><span style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration:none;float:none;display:inline" class="">Hope that helps!</span><br style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration:none" class=""><br style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration:none" class=""><span style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration:none;float:none;display:inline" class="">Jeff C.</span><br style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration:none" class=""><span style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration:none;float:none;display:inline" class="">Village Power Design</span><br style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration:none" class=""><span style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration:none" class=""></span><br style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration:none" class="">
<blockquote style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration:none;border:0px none" class="">
<div style="margin:30px 25px 10px" class="">
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<div style="display:inline-block;white-space:nowrap;vertical-align:middle;width:346.422px" class=""><a style="padding-right:6px;font-weight:500;color:rgb(72,86,100);text-decoration:none" href="mailto:frenergy@psln.com" target="_blank" class="">frenergy</a></div>
<span class=""> </span>
<div style="display:inline-block;white-space:nowrap;vertical-align:middle;width:339.359px;text-align:right" class=""><span style="color:rgb(144,154,164)" class=""><span style="padding-left:6px" class="">June 15, 2021 at 9:39 PM</span></span></div>
</div>
</div>
<div style="color:rgb(144,154,164);margin-left:24px;margin-right:24px" class=""><p class="">Very few details...What does it mean "he opened it up" I would even know how to do that with the L-ions I've been around, seems like its something a manufacturer should be doing. Temperature? charge rate? recent usage history? Age? Was it disconnected? Did contacts touch a conductor?........</p><p class=""> <span class=""> </span>You can probably get water to explode if you abuse it just right.</p><p class="">Bill</p>
<div class="">Feather River Solar Electric<span class=""> </span><span class=""> </span><br class="">Bill Battagin, Owner<br class=""><a href="https://www.google.com/maps/search/4291+Nelson+St.+Taylorsville,+CA+95983?entry=gmail&source=g" target="_blank" class="">4291 Nelson St.</a><br class=""><a href="https://www.google.com/maps/search/4291+Nelson+St.+Taylorsville,+CA+95983?entry=gmail&source=g" target="_blank" class="">Taylorsville, CA 95983</a><br class="">530.284.7849<br class="">CA Lic 874049<br class=""><a href="http://www.frenergy.net/" target="_blank" class="">www.frenergy.net</a></div>
<div class="">On 6/15/2021 8:14 PM, Jay wrote:</div>
<div class="">--<span class=""> </span></div>
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<div style="display:inline-block;white-space:nowrap;vertical-align:middle;width:346.422px" class=""><a style="padding-right:6px;font-weight:500;color:rgb(72,86,100);text-decoration:none" href="mailto:jay.peltz@gmail.com" target="_blank" class="">Jay</a></div>
<span class=""> </span>
<div style="display:inline-block;white-space:nowrap;vertical-align:middle;width:339.359px;text-align:right" class=""><span style="color:rgb(144,154,164)" class=""><span style="padding-left:6px" class="">June 15, 2021 at 8:14 PM</span></span></div>
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<div class="">A fellow installer sent me this just now.<span class=""> </span><br class="">The battery wasn't working, 5v.<span class=""> </span><br class="">He opened it up and it exploded when he opened it. The lid hit the roof.<span class=""> </span><br class="">Fortunately no one was injured.<span class=""> </span><br class=""><br class="">Anyone know what to do with this? IE recycling?<br class=""><br class="">And just another example of non explosive lithium batteries exploding<br class=""><br class="">Jay<br class="">Peltz power.<span class=""> </span></div>
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