Car won't start because of a dead battery? If you've got access to jumper cables and another running vehicle or a portable jump-starter, you can be back on the road by following this simple set of steps.

Published:Caption:Photo:Manuel Carrillo III/Roadshow
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It's a good idea to always carry jumper cables in your vehicle along with a first aid kit, a flashlight and an extra jacket. Better to have them and never need them than to need them and be without.

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Keep your jumper cables in their case when you're not using them because your battery could die where there's no mobile data coverage, thus precluding you from accessing this how-to gallery. The directions on this case could save you a headache.

Published:Caption:Photo:Manuel Carrillo III/Roadshow
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With your jumper cables ready, locate your vehicle's battery. It's usually under your hood, but if it's not, resort to reading your owner's manual.

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Locate your battery's positive terminal. There's typically a plus symbol near it. Some auto manufacturers even place red couplings near their positive connection points for easier identification.

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Take one of the positive, red jumper cable clamps and place it onto the positive terminal.

Published:Caption:Photo:Manuel Carrillo III/Roadshow
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With the operable vehicle turned off and parked near the car with the dead battery, place the other red clamp onto that vehicle's positive battery terminal.

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While you're there, place the black clamp onto the operable vehicle's negative terminal.

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Walk back over to the inoperable vehicle and place the other black clamp onto a piece of ferrous metal at least a foot away from the dead car's battery.

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Clamping onto the inoperable vehicle's negative terminal can cause an explosion, so if you like your face, don't do that.

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Once you've made all your connections, start the operable vehicle's engine and run it up to 1,500 rpm for about three minutes. After that, your once-dead battery should have enough charge to start the engine. Remove the jumper cables in the opposite way you attached them, drive your car for about half an hour to keep charging the battery and you'll be good to go.

Published:Caption:Photo:Manuel Carrillo III/Roadshow
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