Have a mobile booster? Here's how to use it.

	A mobile booster is a portable battery that allows you to boost your car's battery without having to connect it to a second car; this might come in handy if another car is unavailable, or if your car is topped somewhere where getting another car close to it might be difficult or impracticle. Mobile boosters can easily be found in an auto parts store, in a store like Target or Wal-Mart, on on online sites like amazon. Once you've acquired the booster, plug it in to charge it if it doesn't come pre-charged, and then keep it in your trunk or rear hatch - it won't be able to help you if it's in your basement or in your trunk with no charge!
	First, open the car's hood. To do this, just pull the vehicle's hood release lever, which is usually located somewhere below the steering wheel and has a drawing of a car with an open hood. The hood will then pop up slightly. To release it the rest of the way, move to the front of the car, reach under the middle of the hood and press the second hood release lever; it might help to kneel down to the same level as the hood so that you can see this latch. With the hood now completely released, use the hood prop arm in the car's engine bay to hold the hood fully open.If you have trouble locating either hood release or the prop arm, consult the car's owner manual.
	Once you've got the hood open, find the car's battery. In some cars, you'll be able to spot the battery right away: it will be a plastic box with one red terminal and one black terminal and a cable connected to each. In some cars, the battery is under a hard plastic cover, which will be marked on top with a battery symbol (see left). Once you remove the battery cover, the battery will appear as described above. The red terminal is the battery's positive (+) terminal, and the black terminal is the battery's negative (-) terminal. At this point, check and see if the cables attached to the battery's posts are securely attached. If either attachment is lose, tighten it and then attempt to crank the car again. If that doesn't help, proceed to the next step.
	You'll notice that your booster pack has two cables, one with a red clip and one with a black clip. Attach the red clip to the red/positive battery terminal of the battery. NOTE: once the cables are attched to any part of a battery, do not let the metal clipping ends touch!
	Now, connect the black clip to an unpainted metal surface under the hood of the car. If no suitable surface is available, you may attach the final black clip to the black/negative (-) terminal of the dead battery.
	Finally, switch the battery booster pack to the 'ON' position.
	Let the booster pack charge the car's battery for a few minutes and then, after checking to make sure that the vehicle has been placed either in Park or Neutral with the parking brake engaged, try cranking the car. If the battery is only slightly weak, it might start right away. If so, congratulations! If not, let the battery charge for a few more minutes and then try again.
	Once you've started the car, remove the two clips from the car's battery in the reverse order from which they were applied, close and secure the hood, and then drive the car around for at least 20 minutes to recharge the battery. If you turn the car off before this time, the battery might be insufficiently charged, which could require another jump start.
If the car is driven for at least 20 minutes but wont's crank again after it has been shut off, you might have a failing alternator; the alternator is the part of the car that converts mechanical energy from the engine into electrical energey to recharge the car's battery.
If you can't get the boost start to work, recheck all of the connections from the jumper cables to the car batteries. If the boost start still won't work, the affected car could have a bad battery or a bad starter.
When you get home, immediately recharge the portable booster pack so that it will be ready the next time you need it.