question

fcw avatar image
fcw asked

Newly installed Mppt 75/15 not showing current through the battery monitor

I have two separate solar systems on my boat which run through separate charge controllers. One of the systems has been operational for over a year and is working fine. I notice the charge current going to my batteries through my battery monitor. The new system which I finished installing yesterday shows a current of roughly 4 Amps at the charge controller via the Victron app But I’m not showing that current at my battery monitor. I do have the ability of switching either system on and off so I can clearly see whether I’m getting a charge current at the batteries from either system. Any ideas??

MPPT Controllers
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1 Answer
Matthias Lange - DE avatar image
Matthias Lange - DE answered ·

I guess the negative of the MPPT is connected on the wrong side of the shunt (directly at the battery?).

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fcw avatar image fcw commented ·

Thank you for the tip. Makes perfect sense

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