My BMV 702 has small voltage errors - about 0.07V in total and 0.05 in bottom voltage . Can this be corrected
asked
Can one calibrate BMV 702 for voltage errors
The units are factory calibrated. No user calbrition procedures are available.
Referencing the accuracy specifications in the datasheet, your unit seems well within specification. Voltage accuracy is specified as ±0.3%.
Assuming a 48V system, 48x0.003=0.144. So an error of 0.144V is acceptable at 48V. Your unit's error is less than half of this value.
https://www.victronenergy.com/upload/documents/Datasheet-BMV-700-series-EN.pdf
