question

Grant Baldock avatar image

SmartShunt 500A not setting SOC to 100%

Hi all,


I think I need some help understanding why my SOC is not being set to 100%. I have 2x 120AH Lithium batteries installed in my camper. I have the SmartShunt settings as per below with the Battery capacity set at 240ah

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I also have a Victron IP22 30A Charger installed.


The Charger is reporting the battery is in Storage phase and has been for almost a week. I also noticed today that it did it's weekly absorption cycle. The SmartShunt is reporting Voltage of 14.13 with a almost constant Current of -0.15A or -0.16A and power of constant -2W. The charger is reporting voltage of 13.89v and Current of 0.0A. I manually set the SOC to 100% last weekend when the charger went into storage mode. Given the current draw the Consumed AH is showing -25.1 Ah and the SOC is 92%.

From my understanding given the settings I have for the shunt the SOC should automatically set to 100% once the voltage is above 13.5, the tail current is less than 2% and this is condition is maintained 3 minutes. Am I wrong? What could be preventing this setting to 100%?

SOCsmartshunt
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1 Answer
Paul B avatar image
Paul B answered ·

Have a look at this link as that may help you https://octopusasia.com/battery-monitor-and-soc-state-of-charge/


2 comments
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Thank you Paul,


I watched the video and whilst I believe that I may need to alter some of the settings so that when I am off-grid and using Solar that I don't move to 100% too early. It doesn't appear to explain why I am not hitting the automatic 100% SOC when on 240v charge.


Cheers

Paul B avatar image Paul B Grant Baldock ·
More than likley the charged voltage setting, you need to read up on all those different settings