1st what voltage and current are you charging at?
it would have to be serious amps to create steam...
2nd... have you measured each cell when at 90%+ charge to ensure each cell is the same voltage?
I would guess the cell was way over voltage
sadly a starting capacitors don't store any energy on AC voltage.. what it does is phase shift the sin wave on the start windings allowing the anglers difference from the run windings to start the motor spinning..
1 you will need soft starts on each AC compressor
2 yes eg4 and growatt will do transfer switch
3 you will need a battery to start the units and deal with moving clouds.
legally your are supposed to pull permits before work starts. they do have exceptions like weekends for emergencies.... that's where red tag stop work tags come from people that didn't
I think some BMS have slightly different resistance and Lifepo voltage is so flat in the middle it allows drift. I would think in the upper and lower in the sharp voltage curve it would equal out
what where your testing parameters? where are you measuring the amp and with what? where your cells top balanced? what was your stating voltage and ending? where you using a BMS? what was the pack voltage when the one cell hit lower limit
how is battery 4 at a different voltage? BMS disconnected? battery 4 is at 3.16v per cell no where near 0%. as long as the batteries are at the same voltage. once they get into the sharp part of the curve it will pull current from the fuller battery