Anyone who’s been driving long sufficient has knowledgeable the inconvenience of a dead battery. You walk to start your car, yet nothing happens, so friend head come the trunk come grab her jumper cables.

But wait—do you yes, really know how to use those things? If not, you could end increase making a failure that could cause personal injury, damages to her car—or both.

What Can happen When you Hook up Jumper Cables Backwards?

Hooking the jumper cables increase backwards can develop disastrous results⁠. Possible outcomes encompass irreparable damage to the battery, fried electronics, and even serious personal injury. Specifically what will take place when jumper cables are incorrectly connected depends on number of factors, including the vehicle, the battery, the high quality of her cables, and sheer luck.

Here’s what can happen if friend accidentally hook the cables increase wrong when jumping a car:

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You have to not interchange the assignments that the clamps as soon as attaching them come the batteries.

Jump starting your car with jumper cables is pretty straight forward. Simply affix like poles together. The hopeful jumper cable should affix both batteries’ confident poles while the an unfavorable jumper cable attaches the two negative battery poles.


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Sometimes, girlfriend can attach the an adverse cable to the an adverse pole the the donor battery, and instead of attaching the other finish to the an unfavorable pole the the discharged battery, clamp it come a metal piece of the opposite car’s framework to develop a ground instead.

In a few minutes, the car with the dead battery should have the ability to start right up.