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Car Batteries

How do you know a car battery is dead?

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2010-08-14 21:22:28
2010-08-14 21:22:28

When the battery will no longer accept a charge and cannot provide the required power to operate your vehicle. Have your local auto parts store test it for you.

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Related Questions


If your car battery is dead, you will not be able to start your vehicle without a jump using jumper cables. When the car won't start and the lights on the dash aren't working, it is most likely your battery.


Try start the car. Check the voltage.



If the battery will not hold a charge it more than likely has a dead cell. If the battery is over 4 years old, replace it.


No start? No turnover? No horn? No lights? Check with a voltmeter



A storm has nothing to do with the battery going dead.


Get a donor car and use it's battery to start your car. You will need a set of quality jumper cables. Or you can charge the dead battery on the car for about 2 hours with a good 10 amp battery charger.


No, this will place a very heavy load on the alternator of the car and may result in burning out the diodes of the car charging the battery. You could easily ruin the alternator. Purchase a battery charger and charge the dead battery with that. Alternators are not made to charge dead batteries.


Jump the car from another car battery or hook a charger to the battery.


A completely dead battery or a bad connection to the battery.


Your car won't start. No electrical items will work (radio, lights, power windows/locks...)


It is dead when the car doesnt start. You can see warning sighs when your car takes longer to start, or when rolling your windows up or down takes longer than normal. If you fully charge the battery and it looses that charge over a 24 hour period, and you know there is nothing draining the battery, it has a dead cell. In some cases a battery with a dead cell will not even accept a charge.


Some car battery charges will not charge a completely dead battery. You need to find a type of battery charger that is designed to charge a completely dead battery. You can get around this by hooking a car with a working battery up to the dead battery with jumper cables. The alternator/charging system of the car with the good battery will charge the dead battery. Leave them connected for about 30 min, then disconnect and try to use the battery charger again. If it still won't charge, hook it up to the car with the good battery for a longer period of time.


If it has a dead cell the battery will not hold a charge and must be replaced.


if anything is running off the battery (visibly on) the battery will eventually go dead


A dead battery will have no effect on the computer in the car any more than unplugging your home computer.


The Car Coach - 2011 Dealing with a Dead Car Battery was released on: USA: 8 February 2011


Dead cell in the battery or something is on pulling power from the battery. If it is a dead cell the battery must be replaced.


Car battery jumpers are used to revive a dead battery in your vehicle. This is done by connecting a pair of jumper cables from a running car, or booster car, to the car with the dead battery. Once these are connected, the booster vehicle is started and begins to charge the non-working vehicle.


For an external GPS, yes, assuming that battery is not also dead.


use the key to get in pop the hood and jump charge the car battery if this is not possible phone your main dealer



Your battery is probably dead.


if the battery has some juice left then yes..but if you disconnect battery then NO



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