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philippo avatar image
philippo asked

Overcharging using VE smart network data?

I've created a VE smart network so that the smart shunt data can be used by the chargers (Orion XS and Blue smart). I was hoping it would provide more accurate battery voltage data and negate any voltage drop....

But the chargers seem to over compensate and are producing 14.8v as measured at the shunt instead of the 14.7 Abs voltage in settings. Any ideas why this is? It's only a small discrepancy but quite consistently 0.1v high.

The voltage drop for the Orion XS is close to zero so it would actually be better not using the shared data....



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nickdb avatar image
nickdb answered ·

Do you have temperature compensation enabled?

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philippo avatar image philippo commented ·
No not enabled. No temperature sensor.

I thought it might be another quirk of the Orion XS but now seeing the same behaviour with the Blue smart 240v charger


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philippo avatar image philippo commented ·
Oh sorry yes! I just double checked. It was enabled for both devices. -16.2mv/°C. Could that be doing it then? Is there some ambient temperature sensor? As I have no external temp sensor connected.

I would have thought that would reduce the voltage...not increase it


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