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dhayden avatar image
dhayden asked

What causes 712 not to see full size of battery bank.

I have a dual 100 Ah battery in my camper. I’ve check my wiring and everything looks to be properly installed. My BMV 712 seems to only see my system as 100 AH instead of 200 AH. Any information on what would cause this would be appreciated.

BMV Battery Monitor
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3 Answers
Daniël Boekel (Victron Energy Staff) avatar image
Daniël Boekel (Victron Energy Staff) answered ·

Hi @Dhayden


I've moved your question to the regular section.


Did you read the manual of the BMV?

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bruces avatar image
bruces answered ·

What he's trying to say is "you have to put your battery size in it yourself".

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dhayden avatar image dhayden commented ·

Yes i put the battery size in the battery settings.

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Paul B avatar image Paul B dhayden commented ·

Please attach screen shots of the settings of the BMV, so we can see all the settings

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dhayden avatar image
dhayden answered ·

here’s a screenshot of my settings.



fe078d46-30e4-47fa-9ec4-c9fb743fb75c.png (130.5 KiB)
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Matthias Lange - DE avatar image Matthias Lange - DE ♦ commented ·

What makes you think that the BMV doesn't "see" your 2x100Ah?

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dhayden avatar image dhayden Matthias Lange - DE ♦ commented ·

Became the state of charge and AH used seem to reflect a 100 AH system.8242377c-ae2e-48b1-ba19-45688a4fbe46.png

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8242377c-ae2e-48b1-ba19-45688a4fbe46.png (134.6 KiB)
dhayden avatar image dhayden commented ·

79e755c0-b1fc-467b-8a7b-81b5639be58d.pngThis is the most current screen shot. This is with the battery bank isolated from any Current draw.

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79e755c0-b1fc-467b-8a7b-81b5639be58d.png (130.6 KiB)