What is the motor starting current and motor stall current for BLDC
With a brushed DC motor, it's relatively easy. One way to express it is that you measure the resistance of the motor, and calculate the stall current. However, as the resistance of brushes varies somewhat with current, you need the resistance at the stall current, so to get that accurately, you end up measuring the stall current anyway. But however you do it, it depends only on the motor itself.
With a BLDC motor, you never connect it directly to the battery, you always use it via an ESC. How the motor starts up depends how the ESC has been programmed.