I don't know the exact numbers but....
If your power cuts out then turn your battery off and on again
If the power comes back on it was most likly the controller LVC that cut it out when you were hard throttling with a low battery.
If the power does not come on then it was most likely the battery bms that cut it out. The battery
BMS will not power up the battery again until the instant you plug it in.
If you want to know the voltage even if the battery has cut out, you can measure it at the charging port.
Gary