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Hi all battery afficionados I am about to take new batteries down to the boat and do the change over. I have searched the forum and found some interesting things I did not know before. Now I would like some clarification. The old set up (six batteries 110Ah) was always a bit higgeldy piggeldy as we couldn't fit all the ends onto the terminals. When I had to buy new batteries at short notice we basically had to do the same again so Set 2 comprises 5 leisure batteries 115Ah I will label them A to E. Positive side Battery A currently has solar cable and one from the Isolator Switch and link to battery B Battery B has two links A and C Battery C has link to B and D as well as smartgauge Battery D has link to C and E as well as one to the Isolator Switch Battery E has link to D Negative side Battery E has link to D and one to Victron and one to the Mikuni Battery D has links to E and C and one to the smartgauge Battery C has links to B and D and one to the solar panels Battery B has links to A and C and one to Victron Battery A has link to B and one off to the Starter Battery Now the 4 new batteries 160Ah have a M8 bolt type fitting so no need for the terminal clamps as used previously so we hope that it will be easier to fit more cables to a single post. The proposed layout is going to be Positive side Battery A has both the Isolator cables and the link to B Battery B has link A and C Battery C has link to B and D Battery D has Link from C and solar and Mikuni and smartgauge (ie 4 one large and three small) Negative side Battery D has link to C and both large cables to Victron Battery C has links to D and B Battery B has links to A and C Battery A has link from B then the large one to Starter battery and the negatives to Solar Mikuni and smartgauge. I am reasonably happy with this BUT which order should I pile the cable ends for best connection (thinking smartguage here) (My reasoning for putting both Isolator switch connections to one and both Victron to the other is I am not 100% sure why there are two or if this is immaterial or not and if material and I put them the wrong way around it could mean that they are not going to pass through the whole bank. If you get my drift.) I have printed off the smartgauge info linked to in a previous post about how to correctly interconnect multiple batteries but a) this doesn't address the issue of all the other items connected to the bank. I have basically assumed that by having the charger going one way and the solar and everything else going the other way around that that is okay. Otherwise Everything would have to go onto two diagonally opposite terminals and b ) we don't have enough extra cabling to do the fancy Methods 3 or 4. Battery etc.pdf Schematic, what I drew, of current set up since oct 14.pdf