Thanks for the heads up.Hey - everything has been running well for a couple months now.
My inverters dont talk to my BMS, and there is ABSOLUTELY NO NEED TO. I use a raspberry Pi to get info from the BMS & put it into Home Assistant dashboard to check all the details.
My Deye units are configured with max charge/discharge rates - 70A each, so max possibly would be 140A. I've only got 4kw panels max on one - so thats 74A anyway. Each unit pulls max 5kw - 100A max anyway, for a 280Ah pack thats fine.
The inverters allow custom voltage settings for charging (it assumes SLA battery when doing this?) - which I set to 55.2 for Absorb & Equalization - which actually gives 54.7v at the battery (just an odd 0.5v diff for some reason). So it hits 3.418v per cell on charge. Float is then at 54.8 - 54.3v at the battery which is 3.39v/cell. This works beautifully & the charge curve is nice & all behaves well.
I'm super, SUPER happy with the DEYE units - the support/company is a bit meh to deal with, but the product itself is flawless.
The only thing i've had to do is add fans to the external heatsink - 2x92mm ultra silent PC fans are perfect. It was getting pretty warm until full charge on a hot day - I prefer to keep temps to a minimal for longevity.
The 0.5V diff could be due to instrument calibration and some volt drops.
I think my 5kW Deye model comes with fans (I've not unboxed yet).