question

eliott avatar image
eliott asked

Any ideas why the VE Bus voltage and the BMV voltage are different (54V vs 52V)

Hi!

I can't really explain the difference between these two measurements. There is no load and yet, there is a 2V diff in the readings. Any ideas why?


thanks



MultiPlus Quattro Inverter ChargerBMV Battery MonitorLithium Battery
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1 Answer
eliott avatar image
eliott answered ·

Hi All!

Unfortunately I had to travel there to see. I share the cause maybe it would save some hours for someone.


So we power the BMV form the VE.Bus BMS load disconnect. However, the BMS's battery+ was by accident connected to the charge disconnect. I have no idea why it worked in the first place, but it did. After rewiring to battery + the difference disappeared.



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