How to jump start a car?

[Леонидас]

You could easily jump-start a car if you read the instructions that follow. Be sure to require jumper cables as well as a second car equipped with a functional battery.​

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Procedure​

Step 1: Precautions - Safety First.​

Ensure Safety: Switch off the engines of the two cars involved and take off the keys
Engage Parking Brake and activate the Park/ Neutral gear of your vehicle
Investigate the Batteries:
Check for visible damage, leaks, or corrosion. If the battery is damaged, don't jump-start.
Avoid Sparks:
The jumper cable clamps should not be touching each other.

Step 2: Position the Cars​

Place the two vehicles close enough to allow jumper cables to reach between them, yet avoid them touching other cars.

Step 3: Connect the Jumper Cables​

Connect Red (Positive) Cable:
Connect one end of the red cable to the dead battery's positive (+) terminal.
Connect the other end of the red cable to the positive (+) terminal of the good battery.
Black (Negative) Cable:
Attach one end of the black cable to the good battery's negative (-) terminal.
Connect the other end of the black cable to an unpainted metal surface on the car with the dead battery (such as a bolt or bracket). This provides a ground and decreases the likelihood of sparks occurring around the battery.

Step 4: Begin the Working Car​

Begin the working car and let it run for 2–5 minutes to charge the dead battery.

Step 5: Begin the Dead Car​

Try to start the car with the dead battery. If it doesn't start, wait another minute or two and try again.

Step 6: Remove the Jumper Cables​

When the dead car starts, remove the jumper cables in reverse order:
Remove the black cable from the unpainted metal surface.
Remove the black cable from the negative (-) terminal of the good battery.
Remove the red cable from the positive (+) terminal of the good battery.
Remove the red cable from the positive (+) terminal of the dead battery.

Step 7: Allow the Engine to Idle​

Let the jump-started car idle for at least 15–20 minutes or drive it around a few blocks to allow the alternator to recharge the battery.
Sidelight Success Tips
If the car does not start after several attempts, the battery is probably too drained, or there is another problem (e.g., a faulty alternator or starter).
Purchase a portable jump starter for emergencies if you do not have another vehicle available.