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<p>Talk to Thomas Honey. He is the Fortress rep, nice guy, and
knowledgeable wrench. He has stepped in on my issue. <br>
</p>
<p>Ray <br>
</p>
<div class="moz-cite-prefix">On 11/16/2022 10:58 PM, Howie
Michaelson via RE-wrenches wrote:<br>
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cite="mid:CAHMeMsmVMSeK1ERD6dJXQrhsmMRttM6UZGSQiMQPn51fZvBRwg@mail.gmail.com">
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<div class="gmail_default"
style="font-family:verdana,sans-serif">Good Evening,</div>
<div class="gmail_default"
style="font-family:verdana,sans-serif"><br>
</div>
<div class="gmail_default"
style="font-family:verdana,sans-serif">I have a frustrating
charging issue involving 2 Fortress eVault Maxs connected to a
Sol-Ark 15k. Commissioned the system last week, replacing a
legacy off-grid Dual Stack SunnyIsland 5048s and 2-volt Rolls
battery system. Initially, we connected one of the eVaults to
the Sol-Ark, programmed it to Fortress' and Sol-Ark's specs,
setup closed loop, and things seemed fine. The battery
charged at around 95 amps off the 20kW Kohler. The next day we
connected the 2nd eVault, went through the procedures as
Fortress suggested, made the necessary settings changes in the
Sol-Ark, and that is when the issue started. <br>
</div>
<div class="gmail_default"
style="font-family:verdana,sans-serif"><br>
</div>
<div class="gmail_default"
style="font-family:verdana,sans-serif">Ever since we connected
the 2nd eVault, we have not been able to get the charge rate
much above a combined total of 35 amps. Fortress has pretty
much said that it can't be anything on their end (although the
communication with them has been very much limited and
frustrating). They say that nothing on their side would limit
the charge rate to that low, especially if the batteries were
in a lower state of charge. We've talked to at least 3
different Sol-Ark technicians more than once. We have changed
the setting between closed loop, % SOC, and Battery Voltage
multiple times. We've tried dropping back to a single
battery, both the first one we had connected and the second
one (changing the battery setup and the Sol-Ark parameters,
but have only seen at times a moderate increase in maximum
charge rate (up to about 40 amps total).</div>
<div class="gmail_default"
style="font-family:verdana,sans-serif"><br>
</div>
<div class="gmail_default"
style="font-family:verdana,sans-serif">This small increase
happened after a Fortress technician suggested that we turn on
both the generator and the grid charging toggles (the
generator is connected to the grid port on the Sol-Ark as per
Sol-Ark's recommendation. Sol-Ark has run out of suggestions
at the moment, and are having us cycle the batteries tonight
and they will start another charge cycle in the morning to see
if having a lower SOC along with the firmware reload will
change anyhing (I don't think it will - it didn't the last
several times.</div>
<div class="gmail_default"
style="font-family:verdana,sans-serif"><br>
</div>
<div class="gmail_default"
style="font-family:verdana,sans-serif">Has anybody seen this
type of behavior before? I don't think it is a settings
issue, as several technicians have gone through them, I have
gone over them many times using the Fortress/Sol-Ark
integration white papers. Hoping to get higher level tech
involved ASAP, since I don't feel like the lower level techs
know enough to provide useful ideas.</div>
<div class="gmail_default"
style="font-family:verdana,sans-serif"><br>
</div>
<div class="gmail_default"
style="font-family:verdana,sans-serif">Thanks,</div>
<div class="gmail_default"
style="font-family:verdana,sans-serif">Howie<br clear="all">
</div>
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