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I hope you don't mind... but to piggy back on your post. I have the Renogy 3000w inverter and am using 4/0 battery to inverter cabling. It was recommended I run all my batteries to a bus bar and then from the bus bar to the inverter. Can I just use 4/0 from battery to batter then to inverter and...

I thought about the charger. I went with + on battery 4 and - on battery one thinking this would balance the charging. Am I wrong in my thinking? So I could use 2awg cables from battery to busbar? I thought I would need the same from batteries to busbar.

So I've upgraded the cabling to 4/0 battery cable. That is an expensive mistake. Any one need 2 AWG battery cables? :) So now my next question based on post comments is this... What are the advantages of BUSBAR vs POST TO POST on the batteries? I've include some images to visualize things.

That they do. I mis-read their recommendation. Putting together the component list now. At least my instincts were correct in that something wasn’t adding up.

Thanks for the input. I will up the connection gauge and use the buss bar idea.

Inverter is RENOGY 3000W Charger/Inverter. Batteries see image. Batteries are wired in parallel with 2awg battery cables. See image #2 not the best.

correctly. I have a 3000W inverter and 3 x 100AH of lithium batteries. The manufacturer of the inverter says the minimum for 3000W is 3 batteries, yet I'm not sure if I am getting 100% out of either. When I run my shop VAC or Portable AC (not together) the inverter cycles off and then back on...

Specifically the blue input port. I will be connecting these batteries to to a charger/inverter with the hope of adding solar soon. Of course there is no documentation so my question is the blue port a charging port or an information port? Should I use it with the charger or just connect it via...