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gmmarich avatar image
gmmarich asked

BMV-712, on a single battery is displaying a Mid Voltage alert. The voltage reads 13.64 volts

BMV Battery Monitor
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Justin Cook avatar image
Justin Cook answered ·

@gmmarich, how do you have the shunt connected? The PCB on the shunt measures midpoint voltage through the "B2" port on the PCB; what do you currently have connected to the "B2" port, given that you only have one battery?

If you're using a temp sensor and have correctly wired it into both the B1 and B2 ports, replacing the single PCB power wire included in the BMV kit, then you'll need to configure the BMV appropriately, which setting is located in VictronConnect>Settings>Misc>Aux Input


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kayjay avatar image kayjay commented ·
This answer doesn't appear to be correct. I'm having a similar problem and I have the positive lead in B1 as per Victron instructions. If I change it to B2 then there is no power to the monitor. According to the wiring diagram B2 is for starter battery measurement and B1 for power and leisure battery measurement and must always be present. The other option is the temp sensor device which I don't use.


My display gives a midpoint reading of 99.6% all the time. How can I set up to get a correct reading of less than 2%. I use flooded lead acid batteries.

Thanks

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kevgermany avatar image kevgermany ♦♦ kayjay commented ·
You should not configure midpoint voltage in the BMV settings unless you need a midpoint reading. Leave it as starter battery.
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