<html><head></head><body bgcolor="#FFFFFF"><div><div><div>I agree. With some exception, we use AGMs for GTBB and FLA for Off-Grid. That makes the most sense to me. </div><div><br></div><div>But you would think after 20 years, inverter manufacturers would make some software similar to generator cycling to handle this cycling issue. </div><div><br></div><div>We program inverter EQ settings to the Absorb Voltage setting and teach the customer to press the EQ button or menu once a month. We also instruct them to drop the grid once a month to make everything works as planned. No point in having battery backup system if it does not backup under a real outage. </div><div><br></div><div>Certainly, there is room for improvement on battery care from the inverter guys on GTBB systems. </div><div><br>Thank you,<div><br></div><div>Maverick</div><div><br></div><div><br></div><div>Maverick Brown</div><div>BSEET, NABCEP Certified Solar PV Installer ®</div><div>President & CEO</div><div>Maverick Solar Enterprises, Inc.</div><div>Office: 512-919-4493</div><div>Cell: 512-460-9825</div><div><br></div>Sent from an iPhone. </div><div><br>On Feb 16, 2012, at 7:35 AM, Darryl Thayer <<a href="mailto:daryl_solar@yahoo.com">daryl_solar@yahoo.com</a>> wrote:<br><br></div><div></div><blockquote type="cite"><div><div style="color:#000; background-color:#fff; font-family:arial, helvetica, sans-serif;font-size:12pt"><div><span>Well I have some but little experiance, I tried flooded batteries, cycleing batteries in float, I have had to many fail in two to 4 years, I have two C&D sealed AGM battery sets in float, these are now 9 years old, and they are due for a test, but it apperas they are still going fine. One set has had about 2 grid outages in 9 years, the other maybe 9 grid outages. From my experiance the sealed AGM should be the battery of choice for long float periods. </span></div><div><span>Darryl. </span></div><div><br></div> <div style="font-family: arial, helvetica, sans-serif; font-size: 12pt;"> <div style="font-family: times new roman, new york, times, serif; font-size: 12pt;"> <div dir="ltr"> <font size="2" face="Arial"> <div style="margin: 5px 0px; padding: 0px; border: 1px solid rgb(204, 204,
204); height: 0px; line-height: 0; font-size: 0px;" class="hr" contenteditable="false" readonly="true"></div> <b><span style="font-weight: bold;">From:</span></b> "<a href="mailto:toddcory@finestplanet.com">toddcory@finestplanet.com</a>" <<a href="mailto:toddcory@finestplanet.com">toddcory@finestplanet.com</a>><br> <b><span style="font-weight: bold;">To:</span></b> RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org">re-wrenches@lists.re-wrenches.org</a>> <br> <b><span style="font-weight: bold;">Sent:</span></b> Wednesday, February 15, 2012 10:22 PM<br> <b><span style="font-weight: bold;">Subject:</span></b> Re: [RE-wrenches] Interstate L-16 vs Trojan L-16REB<br> </font> </div> <br>
<div id="yiv1829325013"><font size="4" face="arial"><div style="margin: 0px; padding: 0px;">my inquiry is about the health of floating a lead antimony battery bank, in a grid-tie with battery back-up system, where the batteries float 99% of the time... considering (not specifically about any particular brand/manufacturer) i have also heard talk about the necessity to have to "work harden" a set of deep cycle batteries to get optimal use and capacity.</div>
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<div style="margin: 0px; padding: 0px;">in a battery backup system, the batteries wear our from old age, rather than cycling lifespan. it is common for batteries in these systems to go years with no cycling. if cycling is healthy for a battery. i'd like to know that. i have heard people speculate on it before, but never got a definitive answer from a manufacturer. i respect jamie and his expertise, so that is why i'd like to hear what he has to say about these batteries theories floating out there in wrench land.</div>
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<div style="margin: 0px; padding: 0px;">On Wednesday, February 15, 2012 12:52pm, "William Miller" <<a href="mailto:william@millersolar.com">william@millersolar.com</a>> said:<br><br></div>
<div id="yiv1829325013SafeStyles1329365121">Colleagues:<br><br> I am no sure if it would be appropriate for a manufacturer to comment in this forum on the relative merits of two competing battery products.<br><br> Respectfully,<br><br> William Miller<br><br><br> At 12:27 PM 2/15/2012, <a href="mailto:toddcory@finestplanet.com">toddcory@finestplanet.com</a> wrote:<br><br>
<blockquote class="yiv1829325013cite"><span style="font-family: arial; font-size: 14pt;">i would LOVE it if jamie surrette would chime in on this comment.<br><br> <br><br> todd<br></span></blockquote>
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