Car Batteries

How would you know if your car battery has a dead cell?


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2009-06-14 14:36:18
2009-06-14 14:36:18

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.

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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.

A battery that runs down overnight is normally caused by a dead cell in that battery. The only fix is to replace the battery. It can also be caused by any light that is left on, on the vehicle. Dome light, under hood light, trunk light, glovebox light, or even brake lights that our on due to a sticking brake light switch. A relay that is sticking can also cause this. Disconnect the negative battery cable and let the vehicle sit overnight. If the battery is still charged the next morning then you know the battery is good. If the battery is dead then you know the battery has a dead cell and must be replaced.

Remove the battery and check it with a volt meter.

A visual check shows an excess of white buildup between plates. This is lead sulphate. If it is touching both plates in a cell, that cell is dead. This reduces power from the entire battery and may render it useless for applications that need full 12V. If a battery does not retain charge despite long hours of charging, it is dead. The lead oxide paste may have flaked off or the lead plates may have corroded leading to non-retention of charge and a dead battery is the result. If charging does not raise battery voltage or show adequate current according to its Ah rating, the battery is dead. If it is dried up and left unused without recharging for a long time, the battery dies.

Maybe at the plug you did not switch it on =] If not I don't really know =]

Remove the battery and take it to an Auto Parts store. They will check it and tell you if it is defective.

I dont know who made the first battery but i know who made the chemical cell for it. It was Allesandro Volta.

Try start the car. Check the voltage.

the computer will shut off entirely

Why am i writen it on google if i know.

turn the key, and if the interior lights don't come on or flicker, then its dead.

That's a tough one, but I would guess the answer is "when it stops working". That is a true indication that the battery is dead. But don't call a locksmith, because you can still open your door manually with the key... yes, you can, even if the battery key is dead.

A battery that will not hold a charge is normally caused by a dead cell in the battery itself. The only fix is to replace the battery. To know for sure that something is not pulling power from the battery overnight simply fully charge the battery and then disconnect the negative battery cable overnight. Connect it up the next morning and if the battery is dead then the battery has a dead cell and needs replacing. If the battery is still fully charge then look for a parasitic drain on the battery. Any light that is staying on. Under hood, glove box, courtesy, brake, backup, any light. Can also be a relay that is stuck. To check the alternator connect a multimeter set to the 20 volt DC scale. You should get a reading of 13.5 to 15.5 volts with the engine running at idle.

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.

When it will not hold a charge nor take a charge it is defective. Of course something might be on pulling power from the battery. Any light or stuck relay. Disconnect the negative battery cable, charge the battery with a battery charger and let it sit overnight. The next day if the battery is still charged it is ok and you have something pulling power from the battery. If it ran down the battery has a dead cell and is defective.

You would know when your iPod is charging if it has a battery shaped battery on the screen and it has a lightening bolt across. But if it is completely out of battery just leave it and soon a battery would come on the screen.

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

are you sure your battery isn't dead??? i have a 2000 intrigue and i know when my battery would die it would just make clicking noises and never had enough power to crank the engine over hope this helps

You need to take it off and you would usually see the code or some sort of name and cell number to know what it is :) hope i have helped .

Dead cell in the battery or something is on pulling power from the battery. Examples are, trunk, under hood, glove box, brake, or dome light. Most likely the alternator is not charging the battery and would cause battery failure within 2 days of driving. A vehicle that sits with a constant drain (not including lights) will take over a week to drain the battery. I am sure the owner of the vehicle would know if the lights were on or not. I beg to differ. If the under-hood, trunk, or glovebox light is on the owner would never know this. If the alternator were not charging the battery the red charging system light would be on, which I am sure the owner could easily see. Not to say the alternator cannot be defective if the light is burnt out. A battery with a dead cell will run down overnight every time. Also a trunk or or other under-hood light can easily run a battery down if it is not a very strong fairly new battery. But a defective alternator is not out of the question as it can be strong enough to not turn on the charging system warning light, but weak enough to not keep the battery fully charged. Easy to check the output of the alternator. If you read 13.5 to 16 volts at the battery posts with the engine running the alternator is more than likely good. Less than that or more than that and the alternator is defective.

Well you could buy a battery checker at walmart or at target or any were they sell those types of stuff

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