hi i used to use the nedkelly setup with parallel it only reads one inverter at a time, so you either need to run 2 docker instance or 2 raspberry pi's
im currently dabbling with ICC, the ned kelly way was rock solid stable in homeassistant as i run my charging from grid through homeassistant when battery was below 50% only to charge betweeen the 7 hours electricity was cheap.
with ICC i havent even had it run 24hours without it crashing or stop posting mqtt
ive had it about 5 days so far, ive updated it and its on a pi3 b+ i might change to a rpi4 if its a speed issue but the ned kelly app run fine on just a standard 3b
ICC has features i need like Victron BVM over mqtt and the mppsolar 2 way control.
ned kelly had 2 way control but for some reason it never displayed the MPTT solar panel wattage or yeild anything to do with PV power it just always stayed at 0 which was why im trying ICC software.
my first impressions of the ICC is its a nice interface and simple to set up, but its realiablilty so far has been a load of crap which is not a good start