The site for the 300 amp unit states that there is a BSM and LCD screen on the battery for monitoring (it’s actually in the Product header description). But I’m still leery of shelling out that kind of money for an unproven brand. I sent hem a couple of questions and we’ll see what the answers are, they’ve been pretty responsive so far, so maybe it pans out.
I’d like to go higher voltage, but I’m saddled with a brand new 12v Samlex inverter, so that won’t be going anywhere anytime soon. I have good wiring throughout (4/0 between all batteries and with inverter). I also thought you could not wire LIFePO4 batteries in series?