Thanks for this info.
So the car has to be in READY state , so it will not turn off ? or can it it be in Non Ready state too ?
For that the day in CA, i have purchased a cheap non brand Chinese sine way 1000W inverter .
I just want to power up my refrigerator , and charge my laptops.
I will try this setup then only.
As Art indicated, the best place to connect is under the rear cargo liner.
FYI, according to BMW's training manual, the continuous output capacity of the DC/DC converter is 2500w.
It is outlined here on page 62: https://cdn.jack.sh/2014/08/06_I01-High ... onents.pdf
The converter's temperature is monitored and output power is decreased if the converter's temp gets too high.