Smartshunt state of charge, consumed ah, and time remaining all say "--"

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randallemarshall asked Jun 11, '22

Smartshunt state of charge, consumed ah, and time remaining all say "--"

I put together my system over the last few days. It has a Multiplus 2, SmartSolar MPPT, Cerbo GX, Smartshunt, and a 48v LiFePO4 battery. This evening I noticed the Smartshunt state of charge, consumed ah, and time remaining all say "--." This afternoon it was at 100% before I left for a few hours. My PV was supplying more power than I am using.

What would cause the Smartshunt to lose the measurement? I can sync at 100% again tomorrow when the sun is out. I did change some charge settings this afternoon but that was before sundown. Any thoughts? Thank you.

SmartShunt

screenshot-20220610-203302.png (139.6 KiB)

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Answer 1 · 2022-06-11T03:42:54Z

kevgermany answered · Jun 11, 2022 at 03:42 AM

What settings did you change? These are all values that can only be calculated once the shunt knows it has a full battery. Chances are it will show these values automatically after it recognises the battery is full. If you manually synch to 100%, the values will be reported, but won't be correct.

Maybe post a screen shot of your settings.

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randallemarshall commented · Jun 11, 2022 at 12:20 PM

I believe it was tail current and efficiency factor but there may have been more. I will wait until the charger goes into float mode before syncing to 100%.

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screenshot-20220611-061739.png (180.3 KiB)

Answer 2 · 2022-06-11T18:32:39Z

randallemarshall answered · Jun 11, 2022 at 06:32 PM

I waited until my battery read 100% state of charge and the solar charge controller was on float mode. Unfortunately the shunt did not update with the state of charge. I synchronized it to 100% and I'll watch it to see if the data disappears again.

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