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It sounds like a parastic draw. Meaning there is a "parasite" or somthing that is taking elctricity when it shouldn't, away from the battery. Like a dome light or a circuit that is normally shut down when the car is off, but the circuit still draw energy.

For me, it was the boot light not shutting off and that drained the power out of the battery overnight. I am fortunate that I can fold down my back seat to check this, not sure how to check in a normal sedan though.

If you cannot find the source of the drain yourself I guess a trip the autoelectrician is in order?

Good luck. JO

This can be pretty easily tracked down. Disconnnect your negative cable from the battery, place a test light or multimeter between them & check for amperage. Start pulling fuses & putting them back in, as soon as the light goes out or the amperage drops you have found your bad circuit, you can then find the exact source from there. Also try pulling bulbs and harness connectors if none of the fuses makes the light go out.


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โˆ™ 2015-07-17 17:31:24
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Q: Why would the battery die when the car is not running?
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Related questions

Will a car running hot cause battery to die?

No, that will have no effect on the battery.

Why would your car just die while running?

Its battery could die and the engine would stop running. Or a cable plug could have been unplugged and the car would stop, the only real reason it would do this is that the car would hit a large bump or halt at a sudden stop.

What can make a car battery die when running?

It sounds like the alternator is bad. If the alternator is bad the battery will not hold charge when running

Why does battery die when the car is not running?

u might of left the frickin light on

Can a cigarette lighter drain the car battery if the car is on?

If the car is on (Ignition is on, engine is running) then no. Nothing should drain the battery when the car is running, there is a device called an alternator with a belt that usually goes around the crankshaft that transforms the mechanical energy into electrical energy. As long as you have the car running, the battery should not die. If so, you have a mechanical problem.

if your car battery has a dead cell will it die while idling?

As long as your car engine is running, it should be OK. An exhausted battery will only become a problem when you try to start the car.

Would a bad alternator cause a car to die while driving?

If the alternator fails, it is no longer keeping the battery charged and your engine is running on nothing but battery power. Once the battery runs down, your engine will no longer run.

Why did my 99 Cougar die going down highway turn key and have nothing?

your alternator may have went out so the car was running on the battery, once the battery died..... so did the car.

Why after you replace a car battery would the car try to die when applying the brakes?

Perhaps the alternator is not keeping the battery charged properly Check the output of the alternator with a voltmeter a fully charged battery should read approx. 12.8 volts without the engine running With the engine running readings should go to approx. 13.8-14.2 volts

Why would your car stop running while driving and all electricity die?

The easiest answer to this question would be that both your gas ran out and your battery died. Another possibility is a blown alternator, this is the device that turns your engines power into electricity, and charges your battery. Car cannot run without.

Why does battery die when your truck is running?

Your alternator is not recharging the battery and is defective.

Can a bad battery make car die?

Yes. However the alternator may also be bad as it will usually keep the car running once started. The primary duty of the battery is to start the car, and then supply reserve power if needed.

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