There are two main dangers that are commonly associated with jump-starting a car: damaging delicate components in the electrical system and blowing up the battery. Both of these situations can result from crossing the positive and negative cables or shorting them out by touching the positive and negative leads together.

1. When you use a jump box, the basic method of connecting to the dead battery is the same as when you use jumper cables:

2. Connect the positive jump box cable to the positive terminal on the battery.

3. Connect the negative jump box cable to the engine block or another good ground location.

4. Set the jump box in a stable location in the engine compartment, or on the ground if possible, where it won’t become detached, fall, or interfere with the engine pulleys or fan.

5. Attempt to start the car.

6. Carefully disconnect the negative jump box cable and secure it to the jump box.

7. Carefully disconnect the positive jump box cable and secure it to the jump box.