I've been running the LifeBlue 125AH batteries for 8 months of use out of last 12 months and like them fine so far. These are the ones with the integrated bluetooth, so no need for trimetric or any of that.
You can run these down as far as you like, most people seem to go down to 10 or 20%. For SOC, Be careful, a current shunt that accurately measures 100A discharges isn't as accurate if most of your discharge is a lot of hours of just a few amps.
Because I don't like to charge my batteries to 100%, I don't have them charging through the alternator at all.
Another point is that with 2 batteries in parallel, they seem to current share better when not charged to 100%.
I haven't run into any temp issues, but I tend to run low currents.
One nice feature of Lifeblue is the integrated temp sensor. Best info I learned is that your batteries, at about 30lbs of thermal mass, are PERFECT at telling you what the avg. temperature is! So if the daytime high is 55deg, and overnight low just before sunrise is 25 degrees, you battery will be at 40deg in the morning. This is with the batteries being in an outside vented compartment. I've observed this MANY times, overnight lows of 19deg and batts are still at 40deg in the morning.
Since its' better for your batteries not to charge all the way to 100%, this idea of needing higher voltage charging equipment is just bunk. The high charge voltage vs. lead acid is only for the last 5% or so of capacity.
Oh, be sure to have a way to stop all charging of your battery, don't recall if I saw that in your diagram.
I'd also want to get a written statement from whomever you buy the batteries from that they won't trip when you flip on your inverter. You have a good inverter, but some have really high inrush currents.
I love my LiFePo4 batteries, so worry free! A couple days of bad weather? So what. I haven't ever even put any gas in my generator!
Dave
