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jamodi avatar image
jamodi asked

SmartShunt Battery status constantly 0%

img-6245.jpegimg-6246.jpegOh Hello guys

when I synchronise my battery manually , I get 100%. After that, the condition only reduces.

Does anyone have an idea which value I have set incorrectly?


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SmartShunt
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4 Answers
snoobler avatar image
snoobler answered ·

You have likely incorrectly wired the system.


The ONLY thing that should be connected to the (-) side of your battery is the shunt. EVERYTHING else must be on the other side of the shunt:


1687963581946.png


Since you only see SoC decreasing, I suspect you have connected your charger either directly to the battery or to the battery side of the shunt.


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jamodi avatar image
jamodi answered ·

Thank you!

Then I misunderstood the manual. The minus from the MppT controller must also be connected to the shunt and not to the battery , correct?img-6253.jpeg


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pwfarnell avatar image pwfarnell commented ·
The negative (minus) from the MPPT must connect to the system side of the shunt. All loads and all chargers connect to the system side of the shunt. The only thing connected to the battery negative is the battery side of the shunt.
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snoobler avatar image
snoobler answered ·

Sketched where the MPPT wires should go:

1688104175061.png


If you have a battery protect in the power circuit for the inverter, this is not permitted.


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jamodi avatar image
jamodi answered ·

Thanks for the clarification. You speak in the plural. But you certainly mean only the negative connecter from the MPPT comes to the shunt, right?

Yes, it's an inverter. I still have to save some money for one from Victron. Is it not allowed to take power directly from the BP? So I still need a distribution bar? Then is misunderstood the manual.img-6286.jpeg



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snoobler avatar image snoobler commented ·

Correct. (-) only. I got confused by the use of black for all cables.


Battery protect:


Diagram shows it for "DC Loads":


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An inverter is not a DC load. It is a device that powers AC loads.


Manual:


https://www.victronenergy.com/upload/documents/BatteryProtect_12V_24V/114439-Smart_BatteryProtect-pdf-en.pdf


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