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<div id="signature">Steve, you folks still sell the Discover 6650 ? that I use alot. It is faster than C2, they claim. Not that one would want that offgrid where long life is required. Pretty amazing battery for winter genset use.</div>
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<h2 class="heading" style="color: #333333; font-size: 24px; font-family: 'Helvetica Neue', Helvetica, sans-serif; font-weight: bold;">Rolls S24-2800LFP & S48-6650LFP ESS Operating Manual</h2>
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<p class="v1font-bold v1text-uppercase" style="color: #454545; font-size: 15px; font-family: Arial, sans-serif; font-weight: 500; background-color: #ffffff;">ENHANCED RUNTIME</p>
<ul style="color: #181921; font-size: 15px; font-family: UniversLTStd, 'Univers Roman', Arial, sans-serif; font-weight: 500; background-color: #ffffff;">
<li style="color: #454545; font-family: Arial, sans-serif;">Double the high-current runtime of lead-acid battery</li>
<li style="color: #454545; font-family: Arial, sans-serif;">Up to 100% usable capacity</li>
<li style="color: #454545; font-family: Arial, sans-serif;">Up to 100% depth of discharge</li>
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<p class="v1font-bold v1text-uppercase" style="color: #454545; font-size: 15px; font-family: Arial, sans-serif; font-weight: 500; background-color: #ffffff;">EXTENDED SERVICE LIFE</p>
<ul style="color: #181921; font-size: 15px; font-family: UniversLTStd, 'Univers Roman', Arial, sans-serif; font-weight: 500; background-color: #ffffff;">
<li style="color: #454545; font-family: Arial, sans-serif;">10x the life of lead-acid battery (BCI-06)</li>
<li style="color: #454545; font-family: Arial, sans-serif;">Unlimited Partial State of Charge cycles</li>
<li style="color: #454545; font-family: Arial, sans-serif;">10-year energy throughput warranty (Requires Registration)</li>
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<p class="v1font-bold v1text-uppercase" style="color: #454545; font-size: 15px; font-family: Arial, sans-serif; font-weight: 500; background-color: #ffffff;">FAST CHARGING</p>
<ul style="color: #181921; font-size: 15px; font-family: UniversLTStd, 'Univers Roman', Arial, sans-serif; font-weight: 500; background-color: #ffffff;">
<li style="color: #454545; font-family: Arial, sans-serif;">Up to 5x faster than new lead-acid batteries</li>
<li style="color: #454545; font-family: Arial, sans-serif;">Up to 10x faster than aged lead-acid batteries</li>
<li style="color: #454545; font-family: Arial, sans-serif;"><span style="background-color: #2dc26b;">2X faster charging than C/2 Rated lithium batteries</span></li>
<li style="color: #454545; font-family: Arial, sans-serif;">1C continuous charge rate, regardless of SoC</li>
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<p class="v1font-bold v1text-uppercase" style="color: #454545; font-size: 15px; font-family: Arial, sans-serif; font-weight: 500; background-color: #ffffff;">SURGE POWER</p>
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<li style="color: #454545; font-family: Arial, sans-serif;">Power for off-grid inverter surge demands</li>
<li style="color: #454545; font-family: Arial, sans-serif;">Up to 3C peak power discharge rate</li>
<li style="color: #454545; font-family: Arial, sans-serif;">1C continuous discharge ra</li>
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<pre><strong><span style="font-size: small;">Dave Angelini Offgrid Solar
"we go where powerlines don't"
<a href="http://members.sti.net/offgridsolar/" target="_blank" rel="noopener">http://members.sti.net/offgridsolar/</a>
e-mail <a href="mailto:offgridsolar@sti.net">offgridsolar@sti.net</a>
text 209 813 0060</span></strong></pre>
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<p id="reply-intro">On 2023-06-28 8:50 am, Steve Higgins via RE-wrenches wrote:</p>
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<div dir="ltr">Yes, thanks, Darryl... I did mean the C/2 or C/3 rate...
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<div style="float: left; padding: 1px 10px 0 0;"><a href="http://www.rollsbattery.com" target="_blank" rel="noopener noreferrer"><img style="padding: 3px 0px 0px 10px; float: left; margin-right: 10px; width: 98px; height: 115px;" src="cid:1687971353649c66199e798479275303@sti.net" /></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;"><span style="color: #bb1a1d;">Steve Higgins ⋅ </span><span style="color: #404040; font-size: 12px;">Technical Services Manager</span></div>
<div style="font-style: normal; font-variant: normal; font-weight: bold; font-stretch: normal; font-size: 12px; line-height: 20px; font-family: Arial,Helvetica,sans-serif; margin: 0px;"><span style="color: #bb1a1d;"> t</span><span style="color: #b8276a;"> <span style="font-weight: normal; color: #404040;">+1.902.597.4020</span> </span><span style="color: #bb1a1d;">m</span> <span style="color: #404040; font-weight: normal;">+1.206.790.5840</span></div>
<div style="font-style: normal; font-variant: normal; font-stretch: normal; font-size: 12px; line-height: 20px; font-family: Arial,Helvetica,sans-serif; margin: 0px;"><span style="font-weight: bold; color: #bb1a1d;">f</span><span style="font-weight: bold; color: #cf1d0c;"> </span>+1.902.597.8447 <span style="font-size: 12px; font-weight: bold; color: #bb1a1d;">e</span><span style="font-size: 12px;"> </span><span style="font-size: 12px;"><a style="color: #404040; text-decoration: none;" href="mailto:steve@surrette.com" rel="noreferrer">steve@surrette.com</a></span></div>
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<div class="v1gmail_attr" dir="ltr">On Wed, Jun 28, 2023 at 8:47 AM Starlight 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 style="overflow-wrap: break-word;">That makes more sense, Darryl, thanks for sharing that. Another good example, Jay.
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<div>We do have batteries that can be charged at 3C but I have only designed one mobile medical unit with that capability. It required 2 50A shore power connections or could use the onboard 20kW generator. Makes lots of heat doing so and heat is battery enemy #1, molten salt batteries excluded. Lower operating temperatures is a good reason for using lower C rates.
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<div>On Jun 27, 2023, at 7:49 PM, Darryl Thayer 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 class="v1gmail_default" style="font-family: 'times new roman',serif; font-size: large;">Hi Jay and all, I belive Steve meant C/2 or C/3; just a typo. My oldest set of LiFe is almost 10 years? It has a fastest charge rate of C/0.2 because the 10 kWh is charged by 1.6 kW solar. These batteries are doing fine. I do not have a way of measuring the current capacity but </div>
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<div class="v1gmail_attr" dir="ltr">On Mon, Jun 26, 2023 at 3:58 PM Jay via RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org" rel="noreferrer">re-wrenches@lists.re-wrenches.org</a>> wrote:</div>
<blockquote class="v1gmail_quote" style="margin: 0px 0px 0px 0.8ex; border-left: 1px solid #cccccc; padding-left: 1ex;">Hi All<br /><br />I'm wondering if minimum charge amps for lithium is common or not?<br /><br />Or does it have to do with the cell shape: cylindrical vs prismatic vs pouch?<br /><br />A client purchased some EG4 batteries and they are getting a bit out of balanced. Tech support didn't suggest higher volts or longer absorb but did mention they need 30-50 amps charge. It's not in the manual. <br /><br />Wondering what you all think and know<br /><br />Thx<br />Jay</blockquote>
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