<div dir="ltr">From my discussions with Enphase at Intersolar/SPI I do not believe their first gen battery will be capable of or designed for battery backup, it was designed for "energy management" as mentioned. Sounded like it would be another year at least before they staart selling it for battery backup systems. But...we will see. <div><br><div>I also think the Outback GSLC175-AC-120/240 is a good choice for integration with Enphase. But since their ROCB is basically a blackout relay the system isn't likely to ever 3 stage charge lead acid batteries when the grid is down, so if this guy really thinks the grid is going down forever you might not want to mention that to him. This is much better design for grid-tied battery backup systems with lead acid which wouldn't be damaged just hitting bulk voltage and not going through absorb the few times a year the grid is likely to be down. </div><div>Rebekah<br><div><br></div></div></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Mon, Oct 26, 2015 at 9:51 AM, Drake <span dir="ltr"><<a href="mailto:drake.chamberlin@redwoodalliance.org" target="_blank">drake.chamberlin@redwoodalliance.org</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div>
Hello Dan, <br><br>
We are preparing to install a similar system. Enphase now allows AC
coupling. We have specified the Radian. The batteries will be Concorde
AGM, either 305 or 405 AH. Concorde AGMs are useful because they can take
a very fast charge rate. With over 6 kW available to charge batteries,
the charge rate would exceed C/5 for an L-16 battery, which the Concorde
L-16 (405 AH) can easily handle with one string. The Concorde 305 AH can
handle it also. The Radian 8048 can AC couple 6kW. <br><br>
The Radian <font size="2">GSLC175-AC-120/240 load center is set up for AC
coupling.<br><br>
</font>Drake <br><br>
<a name="150a4788302f0454__MailAutoSig"></a>Drake Chamberlin<br>
<i>Athens Electric LLC<br>
OH License 44810<br>
CO License 3773<br>
NABCEP Certified Solar PV <br>
740-448-7328<br>
</i><a href="http://athens-electric.com/" target="_blank">http://athens-electric.com/</a>
<br><span class=""><br>
At 06:32 PM 10/25/2015, you wrote:<br>
</span><blockquote type="cite">Esteemed wrenches;<br>
I have a new client who has convinced himself the world as we know it
will be ending in the next few months. He has ~6kW of Enphase and wants
to add battery backup for critical loads.....quite a few of them. I
recommended he buy some Kill-a-Watt units and start to monitor kWh
usage. <br><span class="">
My first thought was the new Enphase "AC Battery system." Is
this even available for purchase yet, and if so has anyone here tried it?
I'm thinking ease if compatibility, tech support, warranty......<br></span>
Otherwise will likely AC couple a new inverter. I was thinking an
Outback Radian, and lithium batteries (looking at Iron Edison) as my
prediction is they will be mostly sitting idle for the next 10 years at
least. Any pitfalls, horror stories, and no-nos anyone is willing to
share? Crossed off NiFe; my house runs on them and they are fairly
high-maintenance, as I predict this client will be.<span class=""><br><br>
Dan Fink<br>
Adjunct Professor, Ecotech Institute<br></span>
IREC Certified Instructor™ for:Â <br><span class="">
~ PV Installation Professional<br>
~ Small Wind Installer<br>
Executive Director, Buckville Energy<br>
NABCEP / IREC / ISPQ Accredited Continuing Education Providers™<br>
<a href="tel:970.672.4342" target="_blank">970.672.4342</a><br><br></span>
 <br><span class="">
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<br></blockquote></div><br><br clear="all"><div><br></div>-- <br><div class="gmail_signature"><div dir="ltr">Tel: 336.266.8800<br>NABCEP Certified Solar PV Installation Professional™ 091209-85<br>NC Licensed Electrical Contractor</div></div>
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