Why do car batteries die when not used? 2021

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Whats up ,Customer. Over time, our own lives have begun to change. In the meantime, development has changed in our movement. We are using better quality cars because of the improved life system. Since high-quality cars have many operating systems that require a charge to survive, but when we are not using the car regularly, these operating systems do not get their power.

As a result, the battery of the car dies after a while. In this pandemic, the car battery is dying after a particular time as we cannot use the car regularly.  You may also be worried about why do car batteries die when not used?

So when you faced this situation with the car battery, what is the way to overcome this problem? How long does an unused car last?  

What to do if a car battery dies?  With these concerns in mind, we have covered the whole article with clear answers to all the issues.


In our advanced life system, we use high quality cars. If you do not use these cars for a while, the battery will be damaged. This can be a problem during the sudden movement. This blog to know how to repair the battery. Also, to keep the battery running, you can learn how to use the vehicle’s engine to auto-charge the battery. Let’s get started.

Why do Reasons Car Batteries die when not used?

5 REASONS WHY YOUR CAR BATTERY DIES

There are an ample amount of causes why car batteries die. However, indeed, a battery does not last a lifetime.  

Just as it has to be maintained to prolong the battery life, if we know the causes of battery death, we will use the battery for a more extended period.

  •  · Leaving with an air conditioner, headlights, interior lights, flashers, and radios on when the car is not running.
  • · The car has not been used for a long time.
  • · Lack of battery maintenance or poor connection.
  • · Issues with temperature in summer or winter may cause batteries to die.

How Long Does an Unused Car BatteriesLast?  

Due to not using the car regularly, the car battery can go flat and be damaged or die for various reasons. Especially in the current pandemic, our travel or regular use is shallow, so many people have common questions about this.  

why do car batteries die when not used?
Unused Car Batteries

So to stop all these problems, we need to know how long a car can last in unused condition. Generally, we expect a car battery to last four weeks or more. But how long a car battery lasts will depend on how long the car has been used, how old the battery is.  

However, it is complicated to keep the battery charged when your car is unused because its alternator, called the generator of the car’s system, has no chance of charging power.  

That means that if the car is in an unused condition, the generator usually cannot help keep the battery charged. On the contrary, if your car battery is new, then the average lifespan of regular use will be three to four years.  

 On the other hand, if the car is in unused condition for a long time, the battery’s life will significantly reduce because the battery is not charged.  Also, if you can save the car battery properly, then its average lifespan will last up to six months.

How to Prevent a Car Battery from Dying When Not in Use

car batteries die when not used
Car Battery After Charging recovery Best

Usually, if you leave a new battery for a long time, its charge tends to decrease. Once the charge is over, the battery must recharge; otherwise, the battery may be damaged and die if the car is left uncharged for a long time.  

 So a meaningful way to keep your unused car battery from dying is to disconnect the battery from the car and save the battery later. To store the battery, follow these steps:

Check the battery is fully charged

First of all, make sure that the battery is fully charged before disconnecting the battery.  If the battery is fully charged, it can protect it from any damage during storage. 

Wear the equipment and disconnect it

After that, let’s wear gloves to disconnect the battery.  Cut the black cable at the beginning, then cut the red cable and disconnect it. After disconnecting the battery, check if there is any damage or leakage in it.

Clean the car’s battery

When the disconnecting process is done, clean its wound. For cleaning, you can clean with the help of a wire brush by making a mixture of baking soda and water.  

Get proper storage space.

Choose a dry place to store the battery in the right place where ventilation will be good.  And keep away from places that are overheated or cold and have excess moisture. 

Monitoring the battery every week

After placing the battery in the right place, it needs to be monitored constantly.  You can test with a voltmeter to know how much charge the battery has.  When the charge is low, charge it again with the help of an intelligent charger.

 Revive the Dead Battery

Revive the Dead Battery
 Revive the Dead Battery

If you do not use the car regularly, various car systems may be damaged, or when you do not use it for a long time, some functions may be lost or die.  We can also restore those functions or batteries through a specific method. 

All you need to revive is a jumper cable, a functional battery, with another running car. Read the following steps:

  1. · Check that each car is parked or neutral, and make sure both are shut off.
  2.  · Next, connect one end of the red clip to the positive terminal of the other car batteries and then connect the other end of the red clip to the positive terminal of the dead battery.
  3. · Next, connect one end of the black wire to the negative terminal of the other car’s battery, then connect the other end of the black wire to the bare metal of the engine or car frame.
  4. · After connecting to the appropriate cable, let the dead battery charge for a few minutes and then turn on your vehicle to start.

Few F&Q

Why do car batteries die if you don’t drive?

Car batteries are made to supply the necessary amount of electricity to power the car’s components. When the engine is always running, the battery doesn’t get a chance to charge.

How long can a car battery sit unused?

Leaving a battery unused for too long will cause it to lose some capacity, but most of it is recoverable.

Can a completely dead battery be recharged?

Yes. But first, you have to make sure that the battery is not shorted out, as this could cause an explosion, and you need to make sure that the battery is not a gel battery, which cannot be recharged.

How do you keep a car battery from dying when not in use?

You can keep a car battery from draining while you are not using your car by disconnecting the battery from the battery terminals and keeping it on a trickle charger. Charging the battery while it is connected to the terminals will cause the battery to leak.

Do car batteries die when not used?

If the battery does not have enough voltage, you may need to charge it or replace it. If you do not use the car often, you should drive it for at least 20 minutes every 2 weeks to keep the battery charged. If you do not drive the car often, you should drive the car at least once a month to keep the battery charged. If you do not drive the car often, you should drive the car at least once a month to keep the battery charged.

Final Thoughts

You must be able to get rid of your worries by reading the article on why do car batteries die when not used? Typically, an unused car battery dies without the power of charge.

But there is no tension in it; you can recover and save the battery again. You can still replace the battery if your car battery dead has a storage problem you know. Or you can take the help of a professional by observing the manual of the car.


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