Where to place SmartShunt?

[Peregrine1983]

Hi all,

I just purchased a Victron SmartShunt so that I can monitor amp hours in/out/remaining in batts, etc. instead of just voltage at the panel.

I have a rather complex FLA battery system with 2 banks - 1 house and 1 start, but the house bank is made of 4 separate battery boxes in different locations around the boat.

I always use these house batteries together and in parallel. All batts are 12v 100ah marine deep cycles.

I'm debating where on the negative side to place the shunt to monitor this house bank.

If I just pick a battery and attach the shunt at the negative terminal of one of the house bank batts in the most "central" location, will I get fairly accurate reading if the 3 house batteries are always in parallel?

Thanks so much for any help.