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18kPV and 2 wall mount batteries discharge to 0%soc for some reason.

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BobAndRoslyn
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(@bobandroslyn)
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Wondering if anyone has run into this.  We've got an 18kPV and 2 wall mount batteries and have been running as ESS (no pv) with Peak Shaving.  Today the batteries started off low, and when peak shaving kicked in the batteries discharged to 0%soc, instead of stopping when they reached 20%.

Once at 0% soc I cound not get a "Quick Charge" to start.  Called support and after resetting the BMS, we could get a quick charge, but that charge cycle only ran a half hour, bringing the batteries up to 13% and 12% soc respectivly, though both show 51.8 ish V.

image

I'm continuing wiht Signature Solar support, but some weirdness going on.

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Eric
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 Eric
(@eric)
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Which firmware version are you running on the 18kPV and What do you have the Lithium type/brand set to?

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BobAndRoslyn
(@bobandroslyn)
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@eric Signature Solar support changed it yesterday to Lead Acid.

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BobAndRoslyn
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(@bobandroslyn)
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image
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Eric
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 Eric
(@eric)
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Are you able to share your discharge settings and your peak shaving settings?

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BobAndRoslyn
Posts: 41
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(@bobandroslyn)
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@eric, see image below.  SigSol support has instructed and assisted in config changes, and suggested we use this config for a "few weeks" to get batteries in sync.  Love to hear your thoughts.  Running this way is not our ideal. 

We really want to have the batteries run as: 1) Emergency Backup; 2) Peak Shaving mode.  For both scenarios we want batteries topped off from grid as needed to maximize emergency and peak shaving runtime. 

CurrentConfig
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Eric
 Eric
(@eric)
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@bobandroslyn Putting the inverter in Lead acid mode is the best way to balance out the batteries. Unfortunately, I’m unable to clearly see the screenshot you provided, as the quality degrades when I try to zoom in. You might try capturing the screenshot directly from your phone or compute. You can also share your inverter's serial number, and I can review your settings that way.  whichever option works best for you!

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