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Hi. I have a Victron BMV-600s on my Mountain Trail camper trailer. I am running 3 x 105Ah full river AGM batteries for a total of 315Ah. I have done some testing over the last couple of days running my 80L Waeco as a freezer, and have found that the SOC doesn't seem to be displaying correctly. The V is 12.13v, the CE is -37.5Ah, yet the SOC is still showing 93.5%. Any ideas on how to rectify the incorrect SOC? Thanks.
Make sure the only thing connected to the battery side of the BMV's shunt is the battery negative. All loads and charging sources need to be connected to the system/load side of the shunt. The frame connection should also be made to the system/load side of the shunt.
It is also possible that the BMV calibrated to 100% when the batteries were not fully charged. I'd make sure the option to reset to 100% SOC on power up is turned off unless you can guarantee the BMV won't be powered on unless the batteries are fully charged.
