How do I jump start a battery?

Pull the car with the good battery next to the vehicle with the dead battery, or in a place where the cables will easily reach from the battery of one car to the battery of the other. The cars should not be touching and both ignitions should be shut off. Prop open the hood of each vehicle.


Visibly locate the batteries and their terminals. Each battery has two metal terminals. One is marked Positive (+) the other Negative (-). There are also positive and negative cables in the jumper set. The red one is positive, the black one is negative.


Clamp one positive cable onto the positive (+) terminal of the dead battery to connect the positive clamp.

Clamp the other positive cable onto the positive terminal of the “live” battery to connect the other positive (+) clamp.


Now you need to clamp the negative cable end onto the negative (-) terminal of the “live” battery to connect the negative clamp.


Now clamp the remaining cable onto a metal part of the vehicle to ground the connection. The ground can be the engine block or another metal surface of the vehicle away from the battery. This is the final connection.


Start the car providing the jumpstart. Wait a moment, then try to start the car with the dead battery.


Wait a few moments and try again. If it doesn’t start, you may need a new battery. Or your battery’s cable connections could have corrosion, if so, you will need to clean them. Every time a battery is discharged and needs to be jumped, it weakens the battery. After a few jumpstarts, you may want to consider buying a new battery.


Now remove cables in the reverse order that you put them on.

Congrats, you jumpstarted a battery!






Would you like to...

Print this page Print this page

Email this page Email this page

Post a comment Post a comment

Subscribe me

Add to favorites Add to favorites

Remove Highlighting Remove Highlighting

Edit this Question

User Opinions (132 votes)

52% thumbs up 47% thumbs down

How would you rate this answer?

Not helpful
Thank you for rating this answer.

Visitor Comments

  1. Comment #1 (Posted by KC )
    You didn't answer the question....
  2. Comment #2 (Posted by Bill Bender )
    I've got two of your batteries. One's working and one isn't. I'm trying to jump them and NEITHER has it's positive or negative posts marked (Mega II and 65 mo.). Yet your online instructions of how to jump start a battery say batteries will be CLEARLY MARKED!!!! I've jump started batteries for years and never had a problem with the terminals being clearly marked before...just these Interstate batteries.

Related Questions


No attachments were found.