Once my Growatt 3000W inverter shows up Friday, one of my first tasks is to set up a provisional system, get the Growatt configured and test the AC charging, solar charging and naturally try to max out the inverter. That will need about 125A. I also have a 12V Giandel 2200W inverter that will push it close to 185A. If the BMS is actually 200A and it holds at 185A, I will be happy. I will be glad to post the results here if anyone is interested.
Also, when it comes to cycle life, I have four Lion Energy UT-1300's, and one of them is going to need replacing already after maybe 20 cycles, and not even a year old. Hit or miss with batteries. That is why I am trying out the low cost route. The expensive route already has a 25% failure rate for me.