Ok, got the inverter back and going through a test now. Running steady at 115 amps, no problems at all with rhe BMS. Had it at 175 amps for awhile, and the heat sink was hot to the touch. I think if you had a small fan there would be no issues. For me, i need 160 amps for my microwave for short spurts, so it is doing what i expected. For the second hour of my test i am going to try to get it closer to 150 amo draw and let you know. I love the bluetooth connectivity and it works really well. Very happy so far. I think my BMS wores a bit light for the job (2 x 4 AWG) so i will be increasing those to 2/0.