In the standard configuration, yes. However, for the jump starter to be used in this (safe) configuration, the battery must have a residual voltage so that the device is recognised and sets itself automatically. If the battery is completely empty, you have to press the "Override" button, then you can also start a "dead" battery, but the safety and protection functions are switched off, so that the device is no longer "foolproof" in this configuration: You have to pay attention to the correct polarity, do not hold the terminals together and do not make any other contact with the car body, otherwise there is a risk of a highly dangerous electric shock! As I said, none of this can happen in the standard configuration (override to OFF). Noco is known for this safety device, but it should not normally be tricked.