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I have a BMV-712 and it seems the SOC percentage vs the Consumed AH is off. The SOC was showing 75% when the consumed AH showed 248. That’s more like
My total battery bank AH is 645. So 322AH used should be right at 50%.
Does it take time for the BMK to configure itself?
Thank you!
There is most probably no issue.
The battery AH rating entered applies ONLY to a constant 20 hour discharge rate / current.
But when you use your battery the discharge current will vary and can be anything
So when you have a small load you will get MORE capacity out of the same battery.
Conversly, if you are running a huge load that would flatten the battery in a few hours then you will get far LESS than the 20h discharge capacity.
The BMV constantly monitors current in & out of the battery and compensates for this behavior by using the Peukert Exponent specified in the BMV setup parameters.
You can read up more on this if you are interested. You can also take a look at the data sheet for your battery, it should have the battery capacity at many different discharge rates.
Very helpful! I had the exact same question. thx!
