CAUTION: This procedure is designed for a standard, 12-volt, gas or diesel car or light truck. It doesn’t apply to electric cars or hybrids.
CAUTION: Always examine the dead car battery before attempting to jump start it. Never try to jump start a battery that’s cracked, frozen, distorted, or gassing (a heavy vapor rising from anywhere on the battery). All these conditions indicate a serious failure; one that could cause the battery to explode if you attempt to jump it.
To jump start a car, you’ll need a decent set of jumper cables. A 12-foot set should be at least 6-gauge cable; 4-gauge is better (the lower the number, the heavier the cable). The 12- and 16-gauge cables sold in a lot of auto and convenience stores are nearly useless and can be dangerous under certain conditions. Check on line for a better quality set.
Here’s How To Jump Start A Dead Battery:
- Position the car you’re going to jump from near the dead car, and open the hoods on both cars.
- Check the batteries to identify the positive (+) and negative (–) terminals.
- Start the engine on the car that you’re using to jump the dead one.
- Connect the red clamp on your jumper cables to the positive (+) terminal on the dead battery.
- Connect the other red clamp to the positive (+) terminal on the battery you’re jumping from.
- Connect the black clamp to the negative (–) battery terminal on the dead battery.
- Connect the other black clamp to the engine block or a good, heavy bracket on the engine of the car you’re jumping from. This is a safety precaution to keep any sparks away from the battery.
- You should hear the alternator begin to whine and the engine speed change a little on the engine that’s running. That proves you have a good connection.
- Start the engine on the car with the dead battery. You may have to wait a few minutes for the battery to charge a little before it cranks fast enough to start the engine.
- Once the engine starts, leave it running. Don’t shut it off!
- Disconnect the cables, one at a time, from the batteries, in reverse order. Be very careful not to let the loose connectors touch anything until they’re all disconnected.
- Close the hoods on both cars.
Dead Auto Battery Replacement
Take your car right over to your local Cottman center: They’ll check the battery and charging system, and make any repairs necessary to keep you from having to jump a car battery again.