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gman avatar image
gman asked

BMV Monitor setup

Hello I have 3KVa axpert inverter, with 2 x 240ah AGM omnipower batteries connected in series

I want to confirm if my BMV is connected correctly also if the settings is correct, please see attached screenshots

BMV Battery Monitor
9e052aba-6b73-4796-a5ad-dd9d774eaba8.jpeg (3.7 MiB)
0d7a5538-7f3f-4c5b-aeb0-92a8fd38a4a1.jpeg (471.4 KiB)
c5b0f1bd-bff8-41ae-a927-2657088c6f9b.jpeg (1.8 MiB)
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4 Answers
harold avatar image
harold answered ·

I think your charge voltage should be 27,3V (your system is 24V)

Personally I set the tailcurrent to 2%

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gman avatar image
gman answered ·

Hello @Harold thank you. And the battery size is fine?

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harold avatar image harold commented ·

Yes 2x12V serie will be 24V, but 240Ah stays 240Ah


(In paralel it would have been 12V 480Ah)

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ray-mont avatar image
ray-mont answered ·

@Gman which bmv do you have 702?

on the top Picture it looks ok .


But on de bottom picture there are 2 extra minus wires and 1 Extra plus

are you drawing also 12v from the same batteries?
If so that is not good/correct way

in this case the information given by the bmv is partialy correct(only the data from the rct)
beside that it will cause an inbalance on the battery’s

can you provide a drawing how and what is connected?

Please have a look at the below pdf

https://www.victronenergy.nl/upload/documents/Quickinstallsheet_BMV70x_part1_2.pdf

ray

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gman avatar image
gman answered ·

@Ray_mont Thank you, yes its connected like the diagram you given the exstra cables is a battery blanacer that i have installed recently will upload picture of that

My system is a 24v so my setting must be wrong on the BMV. I have the 712 with midpoint monitoring cables


286d3ecf-78b1-400e-ba12-80fc893bb5ca.jpeg (3.5 MiB)
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ray-mont avatar image ray-mont commented ·

@Gman

great then it is only to set the bmv up for a 24v system

ray

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