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joem-h avatar image
joem-h asked

Solar MPPT 75 / 10 App voltage reading higher that measured

Hi I have 2 12V batteries to give me 24Vdc. I am running unit and the measured voltage is 25.3 V but the app is reading 27.58 Vdc! I changed the setting on the app as the distributor told me, and can't understand why this is not reading correct. Please help

MPPT SmartSolar
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Alexandra avatar image Alexandra ♦ commented ·
@joem-h

Is this happening when pv is connected and working?

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joem-h avatar image joem-h Alexandra ♦ commented ·
Yea, they are connected and getting about 42v off although no charging, I guess because the battery state is just in float. I did have 1 solar panel as was told it was OK, before realising it needed 2. I can turn off master switch to the unit and it changes nothing.
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michelg answered ·

Hi Joem-h , the voltage you are reading around 27,6VDC is related to the "float" voltage mode, everything is ok and absolutely normal.

Michel

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