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derekcirillo avatar image
derekcirillo asked

Problems with BMV-72 smart monitor and with solar charge controller 30|100

So ill start with the BMV-712 .. as soon as i connected it to my battery bank 2 100AH 12V battle born batteries in Parallel it gave me a midvoltage warning .. i couldn't find anything on the internet that applied to my specific problem


Now the charge controller.. when i look at the app it says 0watts when my battery switch is on and my battery isnt fully charged and therent isnt a sun in the sky .. is that normal ?

battery chargingbatterysolar
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2 Answers
Matthias Lange - DE avatar image
Matthias Lange - DE answered ·

1. Look into the settings maybe there is something with a midpoint alarm. Maybe you can give us some screenshots.

2. What PV voltage do you have? (screenshots)

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derekcirillo avatar image
derekcirillo answered ·

Yah im getting a midpoint alarm but these are brand new batterys i just set Up and bought at the samE time so i assumed maybe it was something wrong with my setup ?


The solar panels r brand new also as well as the charge controller

Im kind of new to all this stuff and learning as i go but it seems that on a really sunny day with 2 175Watt solar panels I should be getting more then 10watts right?



1 comment
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Matthias Lange - DE avatar image Matthias Lange - DE ♦ commented ·

1. You have a 12v system so you don't have a midpoint to measure 2. The 2nd contact at the shunt PCB is free so the BMV can't measure anything there. Go to the settings and there should be a option to select what is connected to the 2nd input (you should select starter battery)

The MPPT is in float = battery is nearly full take a look at the settings (screenshot).

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