The second is that you can damage the vehicle’s electrical system if you hook the jump box up backward, and the third is that the jumper cables or jump box must be routed or set in a safe location. The first is that the dead battery may have explosive gas leaking out of it. The major sources of danger when you jump-start a car apply whether you use another car or a jump box as the source of power. Is it dangerous to jump-start a car with a jump box? Carefully disconnect the positive jump box cable and secure it to the jump box.ħ. Carefully disconnect the negative jump box cable and secure it to the jump box.Ħ. 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.ĥ. Connect the negative jump box cable to the engine block or another good ground location.ģ. Connect the positive jump box cable to the positive terminal on the battery.Ģ. When you use a jump box, the basic method of connecting it to the dead battery is the same as when you use jumper cables:ġ. These situations can result from crossing the positive and negative cables or shorting them out by touching the positive and negative leads together. Two main dangers commonly associated with jump-starting a car are damaging delicate components in the electrical system and blowing up the battery. If you connect everything the right way and take all the necessary precautions, there is little to worry about. Using a jump box is safe in most circumstances, although it is possible to damage both your car and yourself.
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