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Victron shunt app

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It most likely has to do with the settings for the shunt.  If the settings are incorrect, it won’t synchronize properly on a full charge and the state of charge will be wildly off over time.  Less likely is the zero point calibration is off.  If it accidentally got calibrated while a load (or charge) was present then all the readings will always be off because it’s zero point is off.

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Glenn I have a different brand of shunt than yours, but I remember the initial set up WAS COMPLICATED I even had to read the directions over n over lol. Best I recall to set the shunts FULL Amp Hours indication to match my batteries energy storage capacity, I left the charger on a couple days then made sure there were no loads or chargers online. I must have done something right because its been over a year and the best I can tell my shunt is accurate from its 100% SOC read out at which time my charger and BMS shut down charging (quits drawing charge current or maybe a trickle maintenance) and I observe SOC slowly lower as loads are applied. 

I have no idea how yours is programed, but Id guess calibration and set up is the problem versus any hardware issues??? Call Victron and/or re read the directions I guess ????

 John T



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