A Grade UL Listed cells,
Note this is for a fully boxed 100AH 51.2V battery 5.1kwh, (the pic shows the equlvalent battery in a 200ah version)
A Lower cost solution same quality.
BMS IS compatible with Growatt
he is a video showing this 100AH battery in action.
5 Year Warranty 6000 Cycles 90% DOD .