WJP

I'm enjoying the website. I don't want an additional app on my phone.

Looks like 50mm2 to me.

Your batteries outclass the inverters. In hindsight wouldn't a couple of 8kW Sunsynks have been easier? I think a bus bar would have been a good idea.

Download Victrons guide called "Wiring Unlimited". Its a good read. I think many people on this forum would benefit from it. In there they cover your question with diagrams.

Compare these perhaps there is a hardware, firmware or software difference.

If the budget is limited just buy a smaller LiFePO4 battery. There are some 12V lithium drop in replacements as small as 7Ah. Lead is dead baby.

Note the capacity ratings on a Pb battery are also determined over a gentle 20hr discharge. That's not how you use them is it? I think discussing the merits of LiFePO4 over Pb is like flogging a dead horse. Pb batteries are like an overweight stripper, cheap, heavy, they don't do much work, widely available and in the end you'll regret your decision.

You could also use a Solar MD battery with their V2 Logger. The logger will interface with the inverter via RS232 & with the battery via CAN bus.

So how do you enter? Let's just say I'm an iFan .

I think Hubble is coming out with a 10kWh slimline option soon.

My existing 48V lead acid system could do with an upgrade as the batteries are failing. I've got good video editing/you tube skills for a nice user video...

Just get an 8kW Sunsynk inverter & a supported LFP battery. Grow from there. I agree with the statement above regarding CAN compatibility between bands. It's something to be aware of.

An EcoFlow Delta would be a nice choice for a non permanent power solution.

You could have used something like this: https://scoop.co.za/scoop-25u-800mm-deep-outdoor-cabinet-with-4-fans.html

The important question is why do you read NEWS 24? I find that very concerning.