Need to play around more to find out 100%, the JK is set to Goodwe Canbus so must find out what info that sends to the SI, if there is no voltage info then I must be wrong. The voltage reading the SI has on its display is what it measures itself as if I move the leads back to the lead acid battery it changes to that banks voltage.So the si changes it's voltage settings based on the bms? That's very interesting.
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