Monitoring multiple battery banks with Cerbo GX

DIY
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1

I have a house bank of 3 12v AGMs, a bow thruster battery, a separate start battery for each engine. My Multiplus is connected to the house bank, and the other batteries charge through voltage relays. I plan to put a smart shunt in the house bank. Right now the Cerbo GX report Batt Voltage on the house bank only. The Smart shunt will provide load on the house bank.
I am unsure how I can monitor the other batteries for voltage. A smart shunt will give me load, but it only connects through the (-) connection so certainly cannot provide voltage across the battery. Or maybe it has a small wire that goes to battery positive? If so, I missed that when reading about the smart shunt. I see someone else asked about measuring just voltage on a bank but they received no answer. THAT is my question, how do I measure voltage of batteries other than my house battery? I cannot see how the multiplus could resolve which battery it is reading when charging through the VSRs…

Thanks,

Steve

2

No, the smart shunt has 2 “positive” inputs, so can monitor one battery for power, soc and voltage, and voltage on a second battery.
so you could use 2 smart shunts, and have each one monitor an engine battery as well as the house and bow thruster batteries.

3

Ah, ok, so it has other connections for voltage. Good to know. Thanks for info.