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TL;DR: Well packaged. Got rated capacity. So far, so good. Brief review of the shipping: I bought 8x 123AH(120AH) LiFePO4 from BLS through their AliExpress Store earlier this summer. There was a slight delay due to a typhoon. Once it reached UPS, it arrived quickly. They came in 2 boxes...

If you plan on drawing 4-5kW, I'd go with 48V. Amps will also limit what hardware will work in your system. Some math for 5kW estimated power draw at lower end of battery (the lower the battery voltage, even more amps): 5000W / 24V = ~208A (continuous draw at 208A means wire needs to support...

LiFePO4 batteries have a very flat voltage curve for majority of their state of charge. The voltage will rapidly increase sometime after 90%. Same on the other side, voltage will rapidly drop somewhere under 10%. You can search for "lifepo4 charge curve" for lots of graphs.

What does your charge controller report for energy generated? How big is your solar system? For reference, it takes my 330W system roughly 2 days to charge my 24v 120ah bank.

I bought an 8S 1.2A one and it appears to work. It balanced my 8x120AH LiFePO4's much faster than the ISDT BattGo BG-8S. So, now I just use the BG-8S as a monitor.

Cloud edge/Edge-of-Cloud effect, causes enhanced solar irradiance which can spike the PV power output higher than nominal STC test conditions. I think it's more refraction of some sort than temperature change. I only read an abstract and not the whole paper.

This was a discharge capacity test. I boost charged up to 27.6V then stopped and let it settle down (about 27.0V). I disconnected the solar panel and cleared the stats before I began testing capacity through discharging. The 25.04V is where I stopped as I was satisfied with how much I pulled...