why does my car battery keep dying after jump start

Even a new battery will run out pretty fast in. What Causes a Car Battery to Keep Dying.

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When that happens your car may just shut off or the engine may sound like its suddenly running poorly.

. October 9 2012-- A friend who owns a 2013 Sonata spoke with his dealer in a. A battery that needs a jump-start whether it needs to be replaced or not is nowhere near a full state of charge. Often a battery stops holdong much charge after about 5 years and will nees replacement but there are 2 other reasons.

Your alternator might be faulty and so your battery isnt getting charges as your drive. Will a full recharge help. A mechanic would use an ammeter to probe various circuits to isolate the problem.

Whats much more common is for the connectors to be loose. The good news is the fix is pretty simple. First your alternator might not shut off and end up overloading the battery with too much voltage.

You may have excess current being drawn somewhere in a circuit while the car is not running. Look at the battery of the car. If this is the case have a trusted mechanic check your electrical system to rule out the extreme parasitic drain.

Weather doesnt have to be particularly extreme to cause a cars battery to weaken. Car battery keeps dying after a few days Probably the most common symptom for a cars battery running down is when the car will not start after sitting for a day or two. The first thing to check on a battery that wont start the car is the battery charge.

This is not caused by the battery most likely. You just have to tighten the connection. Odds are your car will start right.

If thats the case just clean that off. This describes my Honda and most Chevys. Conversely it might not charge the battery at all.

The alternator may not be charging the battery and after you jump start the battery if the alternator is not recharging it then the battery may be able to only keep the engine running for a few minutes before running out of power. Why is my car dying immediately after a jump start. The reason why car batteries die in the cold is because they cannot initiate the reaction that produces electricity to start the engine.

Failing Battery If your battery has been run dead too many times has too much internal sediment buildup or is simply too old it may be losing its ability to hold a charge. This means as soon as you turn off the engine the battery starts discharging on its own even if the alternator works fine. Answer 1 of 21.

The alternator in a vehicle is the main component that generates the electricity to provide back to the battery so if it is broken or faulty your battery will not be recharging and as a result your car battery will keep dying. Some of these problems are enough to kill a battery on their own. Learn more from our expert service team.

Even at a mild 32 degrees a battery is 35 weaker. If you are not able to start the car with a jump start you may want to consider checking the following. The headlights were on for 3 days.

This is usually only a problem in older devices or those. Some of the most common reasons for a car battery to die repeatedly include loose or corroded battery connections persistent electrical drains charging problems constantly demanding more power than the alternator can provide and even extreme weather. A voltmeter can help you check.

At 0 degrees it plummets to 60 weaker. My car starts alright but dies as soon as the cables from the other battery are removed. Anyone who expects an alternator to fully recharge a deeply-discharged battery by simply driving around for 10-15 minutes is moving rapidly in the direction of having to replace their alternator.

Once this is done you may be able to start your car. A vehicle with a self-exciting alternator aka one-wire alternator will run without battery power. Some have had the dead battery problem because of a bad cell in the battery faulty battery cables a bad diode in the alternator or even a problem in the cars radio.

These vehicles can be jump-started without a battery and will continue to run once jumper cables are removed. A dead battery after a few days has been a problem on several makes of car not just my 2012 Hyundai Sonata. When this happens its time for a new battery.

But faulty wiring defective fuses and improper installation of accessories can cause extreme parasitic drain which is one of the major causes of why your battery keeps dying all the time. 16 years of experience. A car battery that continues to die on you after multiple jump-starts could be due to a faulty charging system.

But corrosion can also cause a similar problem. If this happens youll need to jumpstart your battery multiple times. The most common reason for a battery running down is that it needs charging.

When a battery is that weak even your interior lights become a challenge forget about starting your car. As a temporary measure you could install a battery kill switch but such a switch will disable your alarm and may cause loss of stored data in the PCM. My car battery is fairly new.

Cold weather is the number one reason why car batteries die. This is why we recommend taking your car on a nice drive after jump-starting it. When this happens it means your battery voltage is completely drained and this can end up permanently killing your battery.

It is possible that a dead or weak battery is causing your car not to start rather than a problem with the starter system. You will need to have. A non self-exciting alternator requires 12V power on one lead to stay energized and in operation.

How To Prevent Your Car Battery From Dying