How Long Does A Car Battery Last Without Driving

by Phil Borges // in Car

It's a question that plagues drivers everywhere: how long does a car battery last without driving? The answer, it turns out, is not as straightforward as you might think. Car batteries can last anywhere from several months to several years, depending on a variety of factors. In this blog post, we will explore the different things that affect battery life and offer some tips on how to make your car battery last longer.

Does car battery die if not driven?

It depends on how long it's been since you last drove. If it's been two weeks or less, the battery should be fine. If it's been longer than that, there's a good chance the battery is dead and will need to be jump-started or replaced.

Some modern vehicles can go even longer without being driven, thanks to a feature called battery saver mode. This mode activates when the car is parked and turns off unnecessary electrical components to conserve power. However, it is generally recommended that you drive your car at least once a week to keep it in good working order, even if it's just for a short distance. If you don't think you'll be driving for a while, it's a good idea to disconnect the battery so that it doesn't drain.

How long can a car sit before the battery dies?

The main use of a battery in a car is to start the car. When you turn the key in the ignition, it sends an electric current through the starter solenoid, which activates the starter motor. The starter motor cranks the engine until it starts running, then it switches off.

The battery also provides power to all of the electrical systems in the car while it's running, such as the headlights, taillights, dashboard lights, radio, etc. And when you turn off the car, the battery provides power to keep all those systems running for a few minutes so you can safely get out of your car and lock it up. For the battery to perform these functions, it needs to be in good condition all the time.

If you don't drive your car very often, the battery will eventually die. The battery will die after a certain amount of time, usually after several weeks, depending on the make and model of the car.

One reason for this is that the electrical system in a car is always drawing some power, even when the engine isn't running. This happens because the alternator is constantly charging the battery, and some power is always required to keep all the electronic systems running. When a car sits unused for an extended period of time, there's not enough charging going on to keep up with all the power demands, so eventually, the battery dies.

Can a car battery go bad from sitting too long?

A car battery can go bad from sitting too long because the battery will eventually discharge and sulfate. When a battery discharges, the lead plates inside the battery become coated with sulfate crystals. These crystals make it more difficult for electricity to flow through the battery, which reduces the battery's ability to start a car. Over time, as more and more crystals form on the lead plates, the battery becomes less and less capable of holding a charge. Eventually, if a car battery is left uncharged for too long, all of the lead plates will become coated with sulfate crystals, and the battery will no longer be able to store any electricity.

And also, when a car sits for an extended period of time, the fluids inside the car will start to evaporate. This includes the oil, anti-freeze, and brake fluid. If the car is not used regularly, it is important to check these fluids periodically to make sure they are at the correct levels. Low fluids can cause major damage to the engine and other parts of the car.

And lastly, when a car sits for a long period of time, there is a greater chance for mold and mildew to grow inside the car. This can cause respiratory problems for anyone who enters the car. It is important to keep all windows open when driving and use air conditioning whenever possible to help remove any mold or mildew from the car.

How long does it take for a car battery to go flat when not used?

Generally, it takes about two to three months for a car battery to go flat when not used. However, this can vary depending on the make and model of the battery, as well as the climate and temperature in which the car is stored. For example, colder climates can slow down the process of a battery losing its charge, while hotter climates can speed it up.

If you're not going to drive your car for an extended period of time, it's important to take some simple steps to help prolong the life of your car battery. One of the most important things to remember is to keep your car battery charged. A battery that's constantly kept in a discharged state will eventually die.

Another thing you can do is remove the car battery from the car and store it in a cool, dry place. Batteries tend to last longer when they're not exposed to extreme temperatures.

Make sure you clean the terminals on your battery regularly with a wire brush and some baking soda or vinegar. Corrosion on the terminals can prevent your battery from charging properly.

And lastly, if you're not going to drive your car, the best way to prolong the life of your car battery is by using a trickle charger. A trickle charger is a device that plugs into your car's battery and slowly charges your battery while you're not driving. This will help keep your battery healthy and prevent it from dying prematurely.


So there you have it. Your car battery's lifespan is impacted by a lot of different things, but the good news is that most of them are within your control. Driving your car regularly is one of the most important ways to keep your battery healthy, so make sure to get out on the open road as often as you can. Give your car battery some TLC, and it will give you many years of trouble-free and long service for sure.

About the author, Phil Borges

Phil Borges is a battery aficionado. He's written extensively about batteries, and he loves nothing more than discussing the latest innovations in the industry. He has a deep understanding of how batteries work, and he's always on the lookout for new ways to improve their performance.