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philburr123 avatar image
philburr123 asked

Smart shunt settings when charging with blue smart charger

Hi!

I am running 2 parallell amg batteries (260Ah 12V per battery) connected as shown on the picture. I have not yet integrated any solar or wind chargers. For the time being I am using a Victron Blue smart ip65 12/15(1)230V 7/17 running to a generator to charge my batteries. When charging the shunt immediately jumps to 100% SOC. What should I set charges voltage and tail current to to avoid this? Also if correctly set, will the shunt show how the SOC rises in real time or will it only synchronize to 100% when criteria are met?

Thanks!img-1828.png

SmartShunt
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pwfarnell answered ·

As your charger is 15A for 520Ah of battery it runs at 3% tail current which is why the shunt thinks the batteries are full. I suggest setting the charged voltage to just below the absorption voltage, if absorption is 14.4V then set charged voltage to 14.2V and the tail current to 2%. As you get to know your batteries you may be able to reduce the tail current, I have 1% on my Victron AGMs.

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pwfarnell avatar image pwfarnell commented ·

With the correct settings you will be able to watch the SOC slowly climb to 100%.

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philburr123 avatar image philburr123 pwfarnell commented ·
Thanks a lot!
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