<div dir="ltr">Yes, thanks, Darryl...   I did mean the C/2 or C/3 rate... <div><br></div><div><br clear="all"><div><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div style="float:left;padding:1px 10px 0 0"><a href="http://www.rollsbattery.com" target="_blank"></a><a href="http://www.rollsbattery.com" target="_blank"></a><a href="http://www.rollsbattery.com" target="_blank"></a><a href="http://www.rollsbattery.com" target="_blank"></a><a href="http://www.rollsbattery.com" target="_blank"></a><a href="http://www.rollsbattery.com" target="_blank"></a><a href="http://www.rollsbattery.com" target="_blank"></a><a href="http://www.rollsbattery.com" target="_blank"></a><a href="http://www.rollsbattery.com" target="_blank"></a><a href="http://www.rollsbattery.com" target="_blank"></a><a href="http://www.rollsbattery.com" target="_blank"></a><a href="http://www.rollsbattery.com" target="_blank"></a><a href="http://www.rollsbattery.com" target="_blank"></a><a href="http://www.rollsbattery.com" target="_blank"></a><a href="http://www.rollsbattery.com" target="_blank"></a><a href="http://www.rollsbattery.com" target="_blank"></a><a href="http://www.rollsbattery.com" target="_blank"></a><a href="http://www.rollsbattery.com" target="_blank"><img src="https://i.imgur.com/YIluKhq.png" alt="" style="padding:3px 0px 0px 10px;float:left;margin-right:10px;width:98px;height:115px"></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"><font color="#bb1a1d">Steve Higgins ⋅ 
</font><span style="color:rgb(64,64,64);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"><font color="#bb1a1d"> 
t</font><span style="color:rgb(184,39,106)"> 
<span style="font-weight:normal;color:#404040">+1.902.597.4020</span>  </span><font color="#bb1a1d">m</font> 
<span style="color:rgb(64,64,64);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"><font style="font-weight:bold" color="#bb1a1d">f</font><font color="#cf1d0c" style="font-weight:bold"> </font>+1.902.597.8447  <font style="font-size:12px;font-weight:bold" color="#bb1a1d">e</font><span style="font-size:12px"> 
</span><span style="font-size:12px"><a href="mailto:steve@surrette.com" style="color:rgb(64,64,64);text-decoration:none" target="_blank">steve@surrette.com</a></span></div> 
<div style="padding-top:8px"><a href="http://www.facebook.com/RollsBattery" target="_blank"><img src="http://cdn3.iconfinder.com/data/icons/free-social-icons/67/facebook_square_gray-24.png" alt="" style="border:none"></a><a href="https://www.youtube.com/user/RollsBattery" target="_blank"></a><a href="https://www.youtube.com/RollsBatteryEngineering" target="_blank"></a><a href="https://www.youtube.com/RollsBatteryEngineering" target="_blank"></a><a href="https://www.youtube.com/RollsBatteryEngineering" target="_blank"><img src="http://cdn3.iconfinder.com/data/icons/free-social-icons/67/youtube_square_gray-24.png" alt="" style="border:none;margin-left:5px"></a><a href="https://www.linkedin.com/company/rolls-battery-engineering" target="_blank"></a><a href="https://www.linkedin.com/company/rolls-battery-engineering" target="_blank"></a><a href="https://www.linkedin.com/company/rolls-battery-engineering" target="_blank"><img src="http://cdn3.iconfinder.com/data/icons/free-social-icons/67/linkedin_square_gray-24.png" alt="" style="border:none;margin-left:5px"></a><a href="http://www.instagram.com/RollsBattery" target="_blank"></a><a href="http://www.instagram.com/RollsBattery" target="_blank"><img src="https://cdn3.iconfinder.com/data/icons/free-social-icons/67/instagram_square-24.png" style="margin-left:5px"></a></div><div style="padding-top:8px"><div style="padding-top:0px"><div style="padding-top:0px;max-width:450px"><span style="color:rgb(153,153,153);font-family:Arial,Helvetica,sans-serif;font-size:10px;line-height:10px"><div style="font-size:10px;color:rgb(153,153,153);padding-top:0px"><span style="font-family:Arial,Helvetica,sans-serif;line-height:10px"><span style="font-family:Arial,Helvetica,sans-serif;line-height:10px"><hr style="font-size:10px;color:rgb(153,153,153)"><div style="font-size:10px;color:rgb(153,153,153);padding-top:0px"><span style="font-family:Arial,Helvetica,sans-serif;line-height:10px">CONFIDENTIALITY: </span><span style="color:rgb(153,153,153);font-family:Arial,Helvetica,sans-serif;font-size:10px;line-height:14px">The information transmitted herein is intended only for the addressee and may contain confidential, proprietary and/or privileged material. Any unauthorized review, distribution or other use of or the taking of any action in reliance upon this information is prohibited. If you receive this email in error, please contact the sender and delete or destroy this message and all copies.</span></div><hr></span></span></div><table></table></span></div></div></div></div></div></div><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, Jun 28, 2023 at 8:47 AM Starlight via RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org">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 style="overflow-wrap: break-word;">That makes more sense, Darryl, thanks for sharing that. Another good example, Jay.<div><br></div><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.<div><div><div style="color:rgb(0,0,0);font-family:Helvetica;font-size:14px;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;text-decoration:none"><br></div><div style="color:rgb(0,0,0);font-family:Helvetica;font-size:14px;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;text-decoration:none">Larry Crutcher</div><div style="color:rgb(0,0,0);font-family:Helvetica;font-size:14px;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;text-decoration:none">Starlight Solar Power Systems</div><div style="color:rgb(0,0,0);font-family:Helvetica;font-size:14px;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;text-decoration:none"><br></div><div style="color:rgb(0,0,0);font-family:Helvetica;font-size:14px;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;text-decoration:none"><br></div><br>
</div>
<div><br><div>On Jun 27, 2023, at 7:49 PM, Darryl Thayer via RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org" target="_blank">re-wrenches@lists.re-wrenches.org</a>> wrote:</div><br><div><div dir="ltr"><div class="gmail_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></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, Jun 26, 2023 at 3:58 PM Jay 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">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<br></blockquote></div></div></div></div></div></div>_______________________________________________<br>
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