<div dir="ltr">The BMS in the eVault Classic has been a headache.<div>Fortunately, we were able to convince Fortress to let us proactively replace the BMS in some of our systems - especially the remote off-grid systems. We are still having problems with weird SOC readings on many of the batteries. Apparently the SOC reading can get stuck at 100% and Fortress is aware of the bug. It is frustrating because the owners rely on the SOC reading rather than voltage. </div><div>This experience did convince me that Li-Ion in off-grid applications is not a reliable solution unless there are multiple independent batteries with their own BMS. The battery itself may be robust (how long have these actually been in the field in real-world applications) but the BMS is a complicated piece of electronics on which the entire system is dependent. Li-Ion violates the KISS principle. So we talk our off-grid clients out of using Li-Ion.</div><div>IMHO relying on firmware and circuit boards to keep your system running and protect it from catastrophic failure is not sustainable. </div><div><br><div><div><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><span><p style="padding:5px 0px;color:rgb(36,105,100);font-size:14px;font-family:soleil,Helvetica,Arial,sans-serif;line-height:1.4rem;letter-spacing:0.04rem;font-weight:lighter!important"><strong style="letter-spacing:0.04rem"><span style="font-size:1.2rem">Eric Smiley,</span></strong><span style="font-weight:lighter;letter-spacing:0.04rem"> Design Manager</span><br></p><p style="padding:5px 0px;color:rgb(36,105,100);font-size:14px;font-family:soleil,Helvetica,Arial,sans-serif;line-height:1.4rem;letter-spacing:0.04rem;font-weight:lighter!important"><a href="mailto:eric@vecoop.ca" style="color:rgb(255,255,255)" target="_blank"><span style="color:rgb(0,168,133)">eric@vecoop.ca</span></a><br><a href="tel:+12507036004" style="color:rgb(255,255,255)" target="_blank"><span style="color:rgb(36,105,100)">T: 250.703.6004</span></a><br><a href="tel:+18883860116" style="color:rgb(255,255,255)" target="_blank"><span style="color:rgb(36,105,100)">T: 888.386.0116</span></a><br><strong><a href="https://viridianenergy.ca/" style="color:rgb(255,255,255)" target="_blank"><span style="color:rgb(0,168,133)">VIRIDIANENERGY.CA</span></a><strong></strong></strong></p><p style="padding:5px 0px;color:rgb(36,105,100);font-size:14px;font-family:soleil,Helvetica,Arial,sans-serif;line-height:1.4rem;letter-spacing:0.04rem;font-weight:lighter!important"><strong style="color:rgb(0,0,0);font-family:"Times New Roman";font-size:medium;letter-spacing:normal"><strong><a href="https://viridianenergy.ca/" target="_blank"><img src="https://viridianenergy.ca/sites/all/themes/viridian/emails/signature-footer.png"></a></strong></strong><br></p></span></div></div></div></div></div></div></div><br></div></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, 14 Feb 2024 at 06:47, Peter Giroux via RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org" target="_blank">re-wrenches@lists.re-wrenches.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div><div lang="EN-US"><div><p class="MsoNormal">Good morning my fellow wrenchers. While I see the comments on SunPower and the challenges, are any of you having similar issues with Fortress? Their bms boards from the early classics have not held up and even after replacement there are still issues ( parallel batteries and stand alone not showing accurate #’s, ). While support has been, well supportive, the issues persist. Any thoughts or fixes you have come up with?? I just had a customer unplug the coms cable from their sol-ark and bring their readings to volts VS %% and it is starting to work a bit better. Any and all help or ideas appreciated.<u></u><u></u></p><p class="MsoNormal"><u></u> <u></u></p><p class="MsoNormal">Thx<br>peter Giroux<u></u><u></u></p><p class="MsoNormal">American Solar<u></u><u></u></p><p class="MsoNormal">Norcross Ga<u></u><u></u></p></div></div>_______________________________________________<br>
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