<p>Hi Howie,</p>
<p>The largest I have seen/worked on is the AES with (17) 6.6 KWH batteries. I can tell you it works fine with an XW system.</p>
<p>Even though it looks like AES uses the conext battery monitor, it really does not and you do not have to buy one. Because AES was from xantrex employees, Schneider lets them use the xanbus data to simulate a battery monitor. See attachment for what it looks like on the conext gateway. The Iron Edison is nice also but you would need the shunt and battery monitor.</p>
<pre><strong><span>Dave Angelini Offgrid Solar
"we go where powerlines don't"
<a href="http://members.sti.net/offgridsolar/" target="_blank">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>
<p>On Fri, 3 May 2019 15:45:28 -0400, Howie Michaelson <Howie.Michaelson@gmail.com> wrote:</p>
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<div>Hi Folks,</div>
<div>About to spec my first Lithium battery backup job. The client is not a heavy user, but wants things done right more than being totally cost effective. </div>
<div>We put in 14kW of net metered solar using SolarEdge and now he wants the backup component. This was significantly oversized for his use, but he wanted to be sure he was putting a bunch more back into the grid than he was using (making up for past profligate power usage). We will be using a dual stacked XW 6848, mostly for enough backfeed capacity (we could wire in a transfer switch and only use 1 XW, but he'd prefer this setup instead).</div>
<div>I have narrowed down my choice for batteries to either:</div>
<div>
<ul>
<li>(2) Iron Edison 200 amp hour batteries, or</li>
<li>(3) Discover AES 130 amp hour batteries</li>
</ul>
<div>Advantages for the AES are that they integrate directly with the Schneider Xanbus network so the Conext battery monitor provides direct insight into the SOC and SOH of the batteries, and they have a slightly higher rated cycle life so higher lifetime energy capacity.</div>
<div> </div>
<div>Advantages of the IronEdison are they come in a larger amp hour size allowing for only needing 2 vs. 3 batteries, they have an integrated fuse and disconnect, and from my sources are 1/3 less in price.</div>
<div> </div>
<div>If anyone has any thoughts on any of this, or corrections to my comparison, I'd greatly appreciate it.</div>
</div>
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