[850C v0.6.5] Battery voltage doesn't match BMS voltage

[coaxial]

Not sure if this is a bug or just a fact of life due to physics.

My Bluetooth BMS reports the battery voltage to be 56 675mV, but on my 850C display it reports 57.3V. I think it should display 56.6 or 56.7V in that case. This is when the motor and bicycle are idle, at 23C room temperature.

When the system is turning on and it shows the voltage on the startup screen at the bottom, that voltage matches what the BMS says. But once it shows the “home” screen, the voltage is higher.

[vlvuk]

Yes I confirm, I also have Bluetooth BMS and I checked voltage directly by voltmeter
In fact my P800C with v0.6.5 indicates higher voltage comparing real one.
Changing battery resistance has no effect.

[lobo0]

The same issue on SW102. Double checked on different multi-meters and on external power supply.
When battery has 54V (13s) on the display I can see 54,6V
When I connect motor with external power supply with 54,6V on the display I can see 55,2V.