The batteries arrived today with the MPPT and have been installed. It was late in the day before I had finshed and initially the controller went to bulk then abs.
The first thing I did was to make a stainless steel backplate to fasten the controller to and use copper and plastic tubing to keep it off the wall, only a centimetere or so.
I have also connected the 1200w inverter, but there is no other loading.
Layout of supply and controllers
May 7th Battery voltage of the 2 x S6 145's in series was 12.76. The electrolyte was high in one cell so I distributed it amongst all six.
Cable from MPPT to batteries is approx AWG 8 or 8.4㎜² (50 amps)
Could do with
See https://www.altecautomotive.co.uk/25mm2--4-awg-automotive-cable-17000amp-2040watts-rated-various-colours-available-375-p.asp
May 9th Electrolyte levels are fine
May 13th Must use VE Direct USB to set up MPPT and equalise.
I will not be making a spreadsheet of input and output for a while.